Names of 81421
| Nominal | 81421 |
| Cardinal | eighty-one thousand four hundred twenty-one |
| Ordinal | 81,421st |
| This number as US currency | eighty-one thousand four hundred twenty-one dollars |
| Is 81421 an odd number? | 81421 is an odd number |
| Is 81421 an even number? | 81421 is NOT an even number |
| Is 81421 a palindrome? | 81421 is NOT a palindrome number |
| Is 81421 a triangle number? | 81421 is NOT a triangle number |
81421 in other Bases
| Base 2 (Binary) | 100111110000011012 |
| Base 3 (Ternary) | 110102001213 |
| Base 4 (Quaternary) | 1033200314 |
| Base 5 (Quinary) | 101011415 |
| Base 6 (Senary) | 14245416 |
| Base 8 (Octal) | 2370158 |
| Base 12 (Duodecimal) | 3B15112 |
| Base 16 (Hexadecimal) | 13E0D16 |
| Base 20 (Vigesimal) | A3B120 |
Primes and Factors tests for 81421
| Is 81421 a Prime Number? | 81421 is a prime |
| Is 81421 a perfect number? | 81421 is NOT a perfect number |
| Is 81421 a Mersenne Prime? | 81421 is NOT a Mersenne prime |
| Is 81421 a Fermat Prime? | 81421 is NOT a Fermat prime |
| Is 81421 a Fibonacci Prime? | 81421 is NOT a Fibonacci prime |
| Is 81421 a Partition Prime? | 81421 is NOT a Partition prime |
| Is 81421 a Pell Prime? | 81421 is NOT a Pell prime |
| Prime Factors | Prime factors of 81421 |
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81421 in other Numerals
| 81421 in Roman Numeral | LXXXMCDXXI |
| 81421 in Chinese Numeral | 捌萬壹仟肆佰貳拾壹 |
| 81421 in Egyptian Numeral | 𓂴𓆼𓍥𓎇𓏺 |
| 81421 in Babylonian Numeral |    |
Roots and stuff for 81421
| Is 81421 a square number? | 81421 is NOT a square number |
| Is 81421 a cube number? | 81421 is NOT a cube number |
| Square root of the number 81421 | 285.34365246138 |
| Cube root of the number 81421 | 43.34231897815 |
Recreational math for 81421
| Number 81421 reversed | 12418 |
| Sum of the digits | 16 |
| No of digits | 5 |