401256975 has 48 divisors (see below), whose sum is σ = 760348160. Its totient is φ = 182908800.

The previous prime is 401256949. The next prime is 401257009. The reversal of 401256975 is 579652104.

It is not a de Polignac number, because 401256975 - 2¹⁸ = 400994831 is a prime.

It is a super-2 number, since 2×401256975² = 322014319972301250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 229605 + ... + 231345.

Almost surely, 2^401256975 is an apocalyptic number.

401256975 is a deficient number, since it is larger than the sum of its proper divisors (359091185).

401256975 is a wasteful number, since it uses less digits than its factorization.

401256975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2200 (or 2195 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 39.

The square root of 401256975 is about 20031.3997264295. The cubic root of 401256975 is about 737.5772819522.

The spelling of 401256975 in words is "four hundred one million, two hundred fifty-six thousand, nine hundred seventy-five".