Names of 129
| Nominal | 129 |
| Cardinal | one hundred twenty-nine |
| Ordinal | 129th |
| This number as US currency | one hundred twenty-nine dollars |
| Is 129 an odd number? | 129 is an odd number |
| Is 129 an even number? | 129 is NOT an even number |
| Is 129 a palindrome? | 129 is NOT a palindrome number |
| Is 129 a triangle number? | 129 is NOT a triangle number |
129 in other Bases
| Base 2 (Binary) | 100000012 |
| Base 3 (Ternary) | 112103 |
| Base 4 (Quaternary) | 20014 |
| Base 5 (Quinary) | 10045 |
| Base 6 (Senary) | 3336 |
| Base 8 (Octal) | 2018 |
| Base 12 (Duodecimal) | A912 |
| Base 16 (Hexadecimal) | 8116 |
| Base 20 (Vigesimal) | 6920 |
Primes and Factors tests for 129
| Is 129 a Prime Number? | 129 is NOT a prime |
| Is 129 a perfect number? | 129 is NOT a perfect number |
| Is 129 a Mersenne Prime? | 129 is NOT a Mersenne prime |
| Is 129 a Fermat Prime? | 129 is NOT a Fermat prime |
| Is 129 a Fibonacci Prime? | 129 is NOT a Fibonacci prime |
| Is 129 a Partition Prime? | 129 is NOT a Partition prime |
| Is 129 a Pell Prime? | 129 is NOT a Pell prime |
| Prime Factors | Prime factors of 129 |
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129 in other Numerals
| 129 in Roman Numeral | CXXIX |
| 129 in Chinese Numeral | 壹佰貳拾玖 |
| 129 in Egyptian Numeral | 𓍢𓎇𓐂 |
| 129 in Babylonian Numeral |   |
Roots and stuff for 129
| Is 129 a square number? | 129 is NOT a square number |
| Is 129 a cube number? | 129 is NOT a cube number |
| Square root of the number 129 | 11.357816691601 |
| Cube root of the number 129 | 5.0527743472086 |
Recreational math for 129
| Number 129 reversed | 921 |
| Sum of the digits | 12 |
| No of digits | 3 |