Names of 138921
| Nominal | 138921 |
| Cardinal | one hundred thirty-eight thousand nine hundred twenty-one |
| Ordinal | 138,921st |
| This number as US currency | one hundred thirty-eight thousand nine hundred twenty-one dollars |
| Is 138921 an odd number? | 138921 is an odd number |
| Is 138921 an even number? | 138921 is NOT an even number |
| Is 138921 a palindrome? | 138921 is NOT a palindrome number |
| Is 138921 a triangle number? | 138921 is NOT a triangle number |
138921 in other Bases
| Base 2 (Binary) | 1000011110101010012 |
| Base 3 (Ternary) | 210011200203 |
| Base 4 (Quaternary) | 2013222214 |
| Base 5 (Quinary) | 134211415 |
| Base 6 (Senary) | 25510536 |
| Base 8 (Octal) | 4172518 |
| Base 12 (Duodecimal) | 6848912 |
| Base 16 (Hexadecimal) | 21EA916 |
| Base 20 (Vigesimal) | H76120 |
Primes and Factors tests for 138921
| Is 138921 a Prime Number? | 138921 is NOT a prime |
| Is 138921 a perfect number? | 138921 is NOT a perfect number |
| Is 138921 a Mersenne Prime? | 138921 is NOT a Mersenne prime |
| Is 138921 a Fermat Prime? | 138921 is NOT a Fermat prime |
| Is 138921 a Fibonacci Prime? | 138921 is NOT a Fibonacci prime |
| Is 138921 a Partition Prime? | 138921 is NOT a Partition prime |
| Is 138921 a Pell Prime? | 138921 is NOT a Pell prime |
| Prime Factors | Prime factors of 138921 |
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138921 in other Numerals
| 138921 in Roman Numeral | CXXXVMMMCMXXI |
| 138921 in Chinese Numeral | 壹拾萬叄萬捌仟玖佰貳拾壹 |
| 138921 in Egyptian Numeral | 𓆐𓂯𓇃𓍪𓎇𓏺 |
| 138921 in Babylonian Numeral |    |
Roots and stuff for 138921
| Is 138921 a square number? | 138921 is NOT a square number |
| Is 138921 a cube number? | 138921 is NOT a cube number |
| Square root of the number 138921 | 372.7210753365 |
| Cube root of the number 138921 | 51.791199192555 |
Recreational math for 138921
| Number 138921 reversed | 129831 |
| Sum of the digits | 24 |
| No of digits | 6 |