Names of 138821
| Nominal | 138821 |
| Cardinal | one hundred thirty-eight thousand eight hundred twenty-one |
| Ordinal | 138,821st |
| This number as US currency | one hundred thirty-eight thousand eight hundred twenty-one dollars |
| Is 138821 an odd number? | 138821 is an odd number |
| Is 138821 an even number? | 138821 is NOT an even number |
| Is 138821 a palindrome? | 138821 is NOT a palindrome number |
| Is 138821 a triangle number? | 138821 is NOT a triangle number |
138821 in other Bases
| Base 2 (Binary) | 1000011110010001012 |
| Base 3 (Ternary) | 210011021123 |
| Base 4 (Quaternary) | 2013210114 |
| Base 5 (Quinary) | 134202415 |
| Base 6 (Senary) | 25504056 |
| Base 8 (Octal) | 4171058 |
| Base 12 (Duodecimal) | 6840512 |
| Base 16 (Hexadecimal) | 21E4516 |
| Base 20 (Vigesimal) | H71120 |
Primes and Factors tests for 138821
| Is 138821 a Prime Number? | 138821 is a prime |
| Is 138821 a perfect number? | 138821 is NOT a perfect number |
| Is 138821 a Mersenne Prime? | 138821 is NOT a Mersenne prime |
| Is 138821 a Fermat Prime? | 138821 is NOT a Fermat prime |
| Is 138821 a Fibonacci Prime? | 138821 is NOT a Fibonacci prime |
| Is 138821 a Partition Prime? | 138821 is NOT a Partition prime |
| Is 138821 a Pell Prime? | 138821 is NOT a Pell prime |
| Prime Factors | Prime factors of 138821 |
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138821 in other Numerals
| 138821 in Roman Numeral | CXXXVMMMDCCCXXI |
| 138821 in Chinese Numeral | 壹拾萬叄萬捌仟捌佰貳拾壹 |
| 138821 in Egyptian Numeral | 𓆐𓂯𓇃𓍩𓎇𓏺 |
| 138821 in Babylonian Numeral |    |
Roots and stuff for 138821
| Is 138821 a square number? | 138821 is NOT a square number |
| Is 138821 a cube number? | 138821 is NOT a cube number |
| Square root of the number 138821 | 372.58690261468 |
| Cube root of the number 138821 | 51.778769194888 |
Recreational math for 138821
| Number 138821 reversed | 128831 |
| Sum of the digits | 23 |
| No of digits | 6 |