Names of 21942
| Nominal | 21942 |
| Cardinal | twenty-one thousand nine hundred forty-two |
| Ordinal | 21,942nd |
| This number as US currency | twenty-one thousand nine hundred forty-two dollars |
| Is 21942 an odd number? | 21942 is NOT an odd number |
| Is 21942 an even number? | 21942 is an even number |
| Is 21942 a palindrome? | 21942 is NOT a palindrome number |
| Is 21942 a triangle number? | 21942 is NOT a triangle number |
21942 in other Bases
| Base 2 (Binary) | 1010101101101102 |
| Base 3 (Ternary) | 10100022003 |
| Base 4 (Quaternary) | 111123124 |
| Base 5 (Quinary) | 12002325 |
| Base 6 (Senary) | 2453306 |
| Base 8 (Octal) | 526668 |
| Base 12 (Duodecimal) | 1084612 |
| Base 16 (Hexadecimal) | 55B616 |
| Base 20 (Vigesimal) | 2EH220 |
Primes and Factors tests for 21942
| Is 21942 a Prime Number? | 21942 is NOT a prime |
| Is 21942 a perfect number? | 21942 is NOT a perfect number |
| Is 21942 a Mersenne Prime? | 21942 is NOT a Mersenne prime |
| Is 21942 a Fermat Prime? | 21942 is NOT a Fermat prime |
| Is 21942 a Fibonacci Prime? | 21942 is NOT a Fibonacci prime |
| Is 21942 a Partition Prime? | 21942 is NOT a Partition prime |
| Is 21942 a Pell Prime? | 21942 is NOT a Pell prime |
| Prime Factors | Prime factors of 21942 |
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21942 in other Numerals
| 21942 in Roman Numeral | XXMCMXLII |
| 21942 in Chinese Numeral | 貳萬壹仟玖佰肆拾貳 |
| 21942 in Egyptian Numeral | 𓂮𓆼𓍪𓎉𓏻 |
| 21942 in Babylonian Numeral |    |
Roots and stuff for 21942
| Is 21942 a square number? | 21942 is NOT a square number |
| Is 21942 a cube number? | 21942 is NOT a cube number |
| Square root of the number 21942 | 148.12832274754 |
| Cube root of the number 21942 | 27.995747653551 |
Recreational math for 21942
| Number 21942 reversed | 24912 |
| Sum of the digits | 18 |
| No of digits | 5 |