402057 has 8 divisors (see below), whose sum is σ = 595680. Its totient is φ = 268020.

The previous prime is 402053. The next prime is 402071. The reversal of 402057 is 750204.

It is a happy number.

It is not a de Polignac number, because 402057 - 2² = 402053 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 402057.

It is not an unprimeable number, because it can be changed into a prime (402053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7419 + ... + 7472.

It is an arithmetic number, because the mean of its divisors is an integer number (74460).

2⁴⁰²⁰⁵⁷ is an apocalyptic number.

It is an amenable number.

402057 is a deficient number, since it is larger than the sum of its proper divisors (193623).

402057 is a wasteful number, since it uses less digits than its factorization.

402057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14900 (or 14894 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 18.

The square root of 402057 is about 634.0796479938. The cubic root of 402057 is about 73.8067149683.

The spelling of 402057 in words is "four hundred two thousand, fifty-seven".