| Nominal | 21942 |
| Cardinal | twenty-one thousand nine hundred forty-two |
Cardinal twenty-one thousand nine hundred forty-two | |
| Ordinal | 21,942nd |
| Number of digits | 5 |
| Sum of digits | 18 |
| Product of digits | 144 |
| Number parity | Even |
| Prime factorization | 2 x 3 x 3 x 23 x 53 |
| Prime factorization in exponent form | 2 x 32 x 23 x 53 |
| Prime factors | 2, 3, 23, 53 |
| Number of distinct prime factors ω(n) | 4 |
| Total number of prime factors Ω(n) | 5 |
| Sum of prime factors | 81 |
| Product of prime factors | 7314 |
| Is 21942 a prime number? | No |
| Is 21942 a semiprime number? | No |
| Is 21942 a Chen prime number? | No |
| Is 21942 a Mersenne prime number? | No |
| Is 21942 a Catalan number? | No |
| Is 21942 a Fibonacci number? | No |
| Is 21942 a Idoneal number? | No |
| Square of 21942 (n2) | 481451364 |
| Cube of 21942 (n3) | 10564005828888 |
| Square root of 21942 | 148.12832274754 |
| Natural Logarithm (ln) of 21942 | 9.9961578873774 |
| Decimal Logarithm (log) of 21942 | 4.3412762107217 |
| Sine of 21942 | 0.8987487172536 |
| Cosecant of 21942 | 1.1126580553637 |
| Cosine of 21942 | 0.4384640729125 |
| Secant of 21942 | 2.2806885712608 |
| Tangent of 21942 | 2.0497659278756 |
| Cotangent of 21942 | 0.48786058271366 |
| The spelling of 21942 in words is "twenty-one thousand nine hundred forty-two", meaning that: |
| 21942 is not an aban number (as it contains the letter a) |
| 21942 is not an eban number (as it contains the letter e) |
| 21942 is not an iban number (as it contains the letter i) |
| 21942 is not an oban number (as it contains the letter o) |
| 21942 is not a tban number (as it contains the letter t) |
| 21942 is not an uban number (as it contains the letter u) |
| Bengali numerals | ২১৯৪২ |
| Eastern Arabic numerals | ٢١٬٩٤٢ |
| Hieroglyphs numeralsused in Ancient Egypt | 𓂭𓂭𓆼𓍪𓎉𓏻 |
| Khmer numerals | ២១៩៤២ |
| Japanese numerals | 二万千九百四十二 |
| Roman numerals | n/a |
| Thai numerals | ๒๑๙๔๒ |
| Arabic | واحد و عشرون ألف و تسعة مائة و إثنان و أربعون |
| Croatian | dvadeset i jedna tisuća devetsto četrdeset i dva |
| Czech | dvacet jedna tisíc devět set čtyřicet dva |
| Danish | en og tyve tusinde ni hundrede to og fyrre |
| Dutch | éénentwintigduizend negenhonderdtweeenveertig |
| Estonian | akpe blaeve vɔ ɖekɛ alafa asieke blaene vɔ eve |
| Faroese | tjúgoeitt tusin og níggjuhundraðogfýratitveir |
| Filipino | dalawáng pû’t isáng libó’t siyám na daán at ápat na pû’t dalawá |
| Finnish | kaksikymmentäyksituhattayhdeksänsataaneljäkymmentäkaksi |
| French | vingt et un mille neuf cent quarante-deux |
| Greek | είκοσι μία χίλιάδες εννιακόσια σαράντα δύο |
| German | einundzwanzigtausendneunhundertzweiundvierzig |
| Hebrew | עשרים ואחד אלף תשע מאות ארבעים ושתיים |
| Hindi | इक्कीस हज़ार नौ सौ बयालीस |
| Hungarian | huszonegyezerkilencszáznegyvenkettő |
| Icelandic | tuttugu og eitt þúsund og níuhundrað og fjörutíu og tveir |
| Indonesian | dua puluh satu ribu sembilan ratus empat puluh dua |
| Italian | ventunomilanovecentoquarantadue |
| Japanese | 二万千九百四十二 |
| Korean | 이만 천구백사십이 |
| Latvian | divdesmit viens tūkstoši deviņsimt četrdesmit divi |
| Lithuanian | dvidešimt vienas tūkstantis devyni šimtai keturiasdešimt du |
| Norwegian | tjueett tusen ni hundre og førtito |
| Persian | بیست و یک هزار و نهصد و چهل و دو |
| Polish | dwadzieścia jeden tysięcy dziewięćset czterdzieści dwa |
| Portuguese | vinte e um mil novecentos e quarenta e dois |
| Romanian | douăzeci şi una mii nouă sute patruzeci şi doi |
| Russian | двадцать одна тысяча девятьсот сорок два |
| Serbian | двадесет и једна хиљада деветсто четрдесет и два |
| Slovak | dvadsaťjedna tisíc deväťsto štyridsaťdva |
| Slovene | dvaset ena tisuću devetsto štirideset dva |
| Spanish | veintiún mil novecientos cuarenta y dos |
| Swahili | elfu ishirini na moja, mia tisa na arobaini na mbili |
| Swedish | tjugoentusenniohundrafyrtiotvå |
| Thai | สองหมื่นหนึ่งพันเก้าร้อยสี่สิบสอง |
| Turkish | yirmi bir bin dokuz yüz kırk iki |
| Ukrainian | двадцять одна тисяча девʼятсот сорок два |
| Vietnamese | hai mươi mốt nghìn chín trăm bốn mươi hai |
| Number 21942 reversed | 24912 | |
| Unicode Character | U+55B6 | 営 |
| Unix Timestamp | Thu, 01 Jan 1970 06:05:42 +0000 | |