Names of 138021
| Nominal | 138021 |
| Cardinal | one hundred thirty-eight thousand twenty-one |
| Ordinal | 138,021st |
| This number as US currency | one hundred thirty-eight thousand twenty-one dollars |
| Is 138021 an odd number? | 138021 is an odd number |
| Is 138021 an even number? | 138021 is NOT an even number |
| Is 138021 a palindrome? | 138021 is NOT a palindrome number |
| Is 138021 a triangle number? | 138021 is NOT a triangle number |
138021 in other Bases
| Base 2 (Binary) | 1000011011001001012 |
| Base 3 (Ternary) | 210000222203 |
| Base 4 (Quaternary) | 2012302114 |
| Base 5 (Quinary) | 134040415 |
| Base 6 (Senary) | 25425536 |
| Base 8 (Octal) | 4154458 |
| Base 12 (Duodecimal) | 67A5912 |
| Base 16 (Hexadecimal) | 21B2516 |
| Base 20 (Vigesimal) | H51120 |
Primes and Factors tests for 138021
| Is 138021 a Prime Number? | 138021 is NOT a prime |
| Is 138021 a perfect number? | 138021 is NOT a perfect number |
| Is 138021 a Mersenne Prime? | 138021 is NOT a Mersenne prime |
| Is 138021 a Fermat Prime? | 138021 is NOT a Fermat prime |
| Is 138021 a Fibonacci Prime? | 138021 is NOT a Fibonacci prime |
| Is 138021 a Partition Prime? | 138021 is NOT a Partition prime |
| Is 138021 a Pell Prime? | 138021 is NOT a Pell prime |
| Prime Factors | Prime factors of 138021 |
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138021 in other Numerals
| 138021 in Roman Numeral | CXXXVMMMXXI |
| 138021 in Chinese Numeral | 壹拾萬叄萬捌仟貳拾壹 |
| 138021 in Egyptian Numeral | 𓆐𓂯𓇃𓎇𓏺 |
| 138021 in Babylonian Numeral |    |
Roots and stuff for 138021
| Is 138021 a square number? | 138021 is NOT a square number |
| Is 138021 a cube number? | 138021 is NOT a cube number |
| Square root of the number 138021 | 371.51177639477 |
| Cube root of the number 138021 | 51.679113662044 |
Recreational math for 138021
| Number 138021 reversed | 120831 |
| Sum of the digits | 15 |
| No of digits | 6 |