128
Everything about the number 128 — its names, how to write it in other bases and numeral systems, and what makes it interesting mathematically.
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Names of 128
| Nominal | 128 |
| Cardinal | one hundred twenty-eight |
| Ordinal | 128th |
| This number as US currency | one hundred twenty-eight dollars |
Properties (and some facts) of 128
| Is 128 an odd number? | 128 is not an odd number |
| Is 128 an even number? | 128 is an even number |
| Is 128 a palindrome? | 128 is not a palindrome |
| Is 128 a triangle number? | 128 is not a triangle number |
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128 in other bases
| Base 2 (Binary) | 10000000 |
| Base 3 (Ternary) | 11202 |
| Base 4 (Quaternary) | 2000 |
| Base 5 (Quinary) | 1003 |
| Base 6 (Senary) | 332 |
| Base 8 (Octal) | 200 |
| Base 12 (Duodecimal) | A8 |
| Base 16 (Hexadecimal) | 80 |
| Base 20 (Vigesimal) | 68 |
Primes and factors tests for 128
| Is 128 a prime number? | 128 is not a prime number |
| Is 128 a perfect number? | 128 is not a perfect number |
| Is 128 a Mersenne prime? | 128 is not a Mersenne prime |
| Is 128 a Fermat prime? | 128 is not a Fermat prime |
| Is 128 a Fibonacci prime? | 128 is not a Fibonacci prime |
| Is 128 a partition prime? | 128 is not a partition prime |
| Is 128 a Pell prime? | 128 is not a Pell prime |
| Prime Factors | Prime factors of 128 |
128 in other numeral systems
| 128 in Roman numerals | CXXVIII |
| 128 in Chinese numerals | 壹佰貳拾捌 |
| 128 in Babylonian numerals |   |
| 128 in Egyptian numerals | 𓍢𓎇𓐁 |
Roots and squares for 128
| Is 128 a square number? | 128 is not a square number |
| Is 128 a cube number? | 128 is not a cube number |
| Square root of 128 | 11.313708498985 |
| Cube root of 128 | 5.0396841995795 |
Recreational math for 128
| Number 128 reversed | 821 |
| Sum of the digits | 11 |
| Number of digits | 3 |
Arithmetic tables for 128
Other pages about 128
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