Names of 21042
| Nominal | 21042 |
| Cardinal | twenty-one thousand forty-two |
| Ordinal | 21,042nd |
| This number as US currency | twenty-one thousand forty-two dollars |
| Is 21042 an odd number? | 21042 is NOT an odd number |
| Is 21042 an even number? | 21042 is an even number |
| Is 21042 a palindrome? | 21042 is NOT a palindrome number |
| Is 21042 a triangle number? | 21042 is NOT a triangle number |
21042 in other Bases
| Base 2 (Binary) | 1010010001100102 |
| Base 3 (Ternary) | 10012121003 |
| Base 4 (Quaternary) | 110203024 |
| Base 5 (Quinary) | 11331325 |
| Base 6 (Senary) | 2412306 |
| Base 8 (Octal) | 510628 |
| Base 12 (Duodecimal) | 1021612 |
| Base 16 (Hexadecimal) | 523216 |
| Base 20 (Vigesimal) | 2CC220 |
Primes and Factors tests for 21042
| Is 21042 a Prime Number? | 21042 is NOT a prime |
| Is 21042 a perfect number? | 21042 is NOT a perfect number |
| Is 21042 a Mersenne Prime? | 21042 is NOT a Mersenne prime |
| Is 21042 a Fermat Prime? | 21042 is NOT a Fermat prime |
| Is 21042 a Fibonacci Prime? | 21042 is NOT a Fibonacci prime |
| Is 21042 a Partition Prime? | 21042 is NOT a Partition prime |
| Is 21042 a Pell Prime? | 21042 is NOT a Pell prime |
| Prime Factors | Prime factors of 21042 |
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21042 in other Numerals
| 21042 in Roman Numeral | XXMXLII |
| 21042 in Chinese Numeral | 貳萬壹仟肆拾貳 |
| 21042 in Egyptian Numeral | 𓂮𓆼𓎉𓏻 |
| 21042 in Babylonian Numeral |    |
Roots and stuff for 21042
| Is 21042 a square number? | 21042 is NOT a square number |
| Is 21042 a cube number? | 21042 is NOT a cube number |
| Square root of the number 21042 | 145.05860884484 |
| Cube root of the number 21042 | 27.607622343375 |
Recreational math for 21042
| Number 21042 reversed | 24012 |
| Sum of the digits | 9 |
| No of digits | 5 |