Names of 21047
| Nominal | 21047 |
| Cardinal | twenty-one thousand forty-seven |
| Ordinal | 21,047th |
| This number as US currency | twenty-one thousand forty-seven dollars |
| Is 21047 an odd number? | 21047 is an odd number |
| Is 21047 an even number? | 21047 is NOT an even number |
| Is 21047 a palindrome? | 21047 is NOT a palindrome number |
| Is 21047 a triangle number? | 21047 is NOT a triangle number |
21047 in other Bases
| Base 2 (Binary) | 1010010001101112 |
| Base 3 (Ternary) | 10012121123 |
| Base 4 (Quaternary) | 110203134 |
| Base 5 (Quinary) | 11331425 |
| Base 6 (Senary) | 2412356 |
| Base 8 (Octal) | 510678 |
| Base 12 (Duodecimal) | 1021B12 |
| Base 16 (Hexadecimal) | 523716 |
| Base 20 (Vigesimal) | 2CC720 |
Primes and Factors tests for 21047
| Is 21047 a Prime Number? | 21047 is NOT a prime |
| Is 21047 a perfect number? | 21047 is NOT a perfect number |
| Is 21047 a Mersenne Prime? | 21047 is NOT a Mersenne prime |
| Is 21047 a Fermat Prime? | 21047 is NOT a Fermat prime |
| Is 21047 a Fibonacci Prime? | 21047 is NOT a Fibonacci prime |
| Is 21047 a Partition Prime? | 21047 is NOT a Partition prime |
| Is 21047 a Pell Prime? | 21047 is NOT a Pell prime |
| Prime Factors | Prime factors of 21047 |
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21047 in other Numerals
| 21047 in Roman Numeral | XXMXLVII |
| 21047 in Chinese Numeral | 貳萬壹仟肆拾柒 |
| 21047 in Egyptian Numeral | 𓂮𓆼𓎉𓐀 |
| 21047 in Babylonian Numeral |    |
Roots and stuff for 21047
| Is 21047 a square number? | 21047 is NOT a square number |
| Is 21047 a cube number? | 21047 is NOT a cube number |
| Square root of the number 21047 | 145.07584223433 |
| Cube root of the number 21047 | 27.609808877919 |
Recreational math for 21047
| Number 21047 reversed | 74012 |
| Sum of the digits | 14 |
| No of digits | 5 |