138021
Everything about the number 138021 — its names, how to write it in other bases and numeral systems, and what makes it interesting mathematically.
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 |
Properties (and some facts) of 138021
| 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 |
| Is 138021 a triangle number? | 138021 is not a triangle number |
138021 in other bases
| Base 2 (Binary) | 100001101100100101 |
| Base 3 (Ternary) | 21000022220 |
| Base 4 (Quaternary) | 201230211 |
| Base 5 (Quinary) | 13404041 |
| Base 6 (Senary) | 2542553 |
| Base 8 (Octal) | 415445 |
| Base 12 (Duodecimal) | 67A59 |
| Base 16 (Hexadecimal) | 21B25 |
| Base 20 (Vigesimal) | H511 |
Primes and factors tests for 138021
| Is 138021 a prime number? | 138021 is not a prime number |
| 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 |
138021 in other numeral systems
| 138021 in Roman numerals | CXXXVMMMXXI |
| 138021 in Chinese numerals | 壹拾萬叄萬捌仟貳拾壹 |
| 138021 in Babylonian numerals |    |
| 138021 in Egyptian numerals | 𓆐𓂯𓇃𓎇𓏺 |
Roots and squares 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 138021 | 371.51177639477 |
| Cube root of 138021 | 51.679113662044 |
Recreational math for 138021
| Number 138021 reversed | 120831 |
| Sum of the digits | 15 |
| Number of digits | 6 |