401
Everything about the number 401 — its names, how to write it in other bases and numeral systems, and what makes it interesting mathematically.
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Names of 401
| Nominal | 401 |
| Cardinal | four hundred one |
| Ordinal | 401st |
| This number as US currency | four hundred one dollars |
Properties (and some facts) of 401
| Is 401 an odd number? | 401 is an odd number |
| Is 401 an even number? | 401 is not an even number |
| Is 401 a palindrome? | 401 is not a palindrome |
| Is 401 a triangle number? | 401 is not a triangle number |
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401 in other bases
| Base 2 (Binary) | 110010001 |
| Base 3 (Ternary) | 112212 |
| Base 4 (Quaternary) | 12101 |
| Base 5 (Quinary) | 3101 |
| Base 6 (Senary) | 1505 |
| Base 8 (Octal) | 621 |
| Base 12 (Duodecimal) | 295 |
| Base 16 (Hexadecimal) | 191 |
| Base 20 (Vigesimal) | 101 |
Primes and factors tests for 401
| Is 401 a prime number? | 401 is a prime number |
| Is 401 a perfect number? | 401 is not a perfect number |
| Is 401 a Mersenne prime? | 401 is not a Mersenne prime |
| Is 401 a Fermat prime? | 401 is not a Fermat prime |
| Is 401 a Fibonacci prime? | 401 is not a Fibonacci prime |
| Is 401 a partition prime? | 401 is not a partition prime |
| Is 401 a Pell prime? | 401 is not a Pell prime |
| Prime Factors | Prime factors of 401 |
401 in other numeral systems
| 401 in Roman numerals | CDI |
| 401 in Chinese numerals | 肆佰壹 |
| 401 in Babylonian numerals |   |
| 401 in Egyptian numerals | 𓍥𓏺 |
Roots and squares for 401
| Is 401 a square number? | 401 is not a square number |
| Is 401 a cube number? | 401 is not a cube number |
| Square root of 401 | 20.024984394501 |
| Cube root of 401 | 7.3741979401628 |
Recreational math for 401
| Number 401 reversed | 104 |
| Sum of the digits | 5 |
| Number of digits | 3 |
Arithmetic tables for 401
Other pages about 401
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