402056 has 16 divisors (see below), whose sum is σ = 780300. Its totient is φ = 193984.

The previous prime is 402053. The next prime is 402071. The reversal of 402056 is 650204.

It can be written as a sum of positive squares in 2 ways, for example, as 401956 + 100 = 634^2 + 10^2 .

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 635 + ... + 1098.

2⁴⁰²⁰⁵⁶ is an apocalyptic number.

It is an amenable number.

402056 is a deficient number, since it is larger than the sum of its proper divisors (378244).

402056 is a wasteful number, since it uses less digits than its factorization.

402056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1768 (or 1764 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 402056 is about 634.0788594489. The cubic root of 402056 is about 73.8066537774.

The spelling of 402056 in words is "four hundred two thousand, fifty-six".