40021
Everything about the number 40021 — its names, how to write it in other bases and numeral systems, and what makes it interesting mathematically.
Names of 40021
| Nominal | 40021 |
| Cardinal | forty thousand twenty-one |
| Ordinal | 40,021st |
| This number as US currency | forty thousand twenty-one dollars |
Properties (and some facts) of 40021
| Is 40021 an odd number? | 40021 is an odd number |
| Is 40021 an even number? | 40021 is not an even number |
| Is 40021 a palindrome? | 40021 is not a palindrome |
| Is 40021 a triangle number? | 40021 is not a triangle number |
40021 in other bases
| Base 2 (Binary) | 1001110001010101 |
| Base 3 (Ternary) | 2000220021 |
| Base 4 (Quaternary) | 21301111 |
| Base 5 (Quinary) | 2240041 |
| Base 6 (Senary) | 505141 |
| Base 8 (Octal) | 116125 |
| Base 12 (Duodecimal) | 1B1B1 |
| Base 16 (Hexadecimal) | 9C55 |
| Base 20 (Vigesimal) | 5011 |
Primes and factors tests for 40021
| Is 40021 a prime number? | 40021 is not a prime number |
| Is 40021 a perfect number? | 40021 is not a perfect number |
| Is 40021 a Mersenne prime? | 40021 is not a Mersenne prime |
| Is 40021 a Fermat prime? | 40021 is not a Fermat prime |
| Is 40021 a Fibonacci prime? | 40021 is not a Fibonacci prime |
| Is 40021 a partition prime? | 40021 is not a partition prime |
| Is 40021 a Pell prime? | 40021 is not a Pell prime |
| Prime Factors | Prime factors of 40021 |
40021 in other numeral systems
| 40021 in Roman numerals | XLXXI |
| 40021 in Chinese numerals | 肆萬貳拾壹 |
| 40021 in Babylonian numerals |    |
| 40021 in Egyptian numerals | 𓂰𓎇𓏺 |
Roots and squares for 40021
| Is 40021 a square number? | 40021 is not a square number |
| Is 40021 a cube number? | 40021 is not a cube number |
| Square root of 40021 | 200.05249311118 |
| Cube root of 40021 | 34.205502802292 |
Recreational math for 40021
| Number 40021 reversed | 12004 |
| Sum of the digits | 7 |
| Number of digits | 5 |