402458 has 32 divisors (see below), whose sum is σ = 777600. Its totient is φ = 152064.

The previous prime is 402443. The next prime is 402487. The reversal of 402458 is 854204.

402458 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 402458.

It is an unprimeable number.

402458 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 15 ways as a sum of consecutive naturals, for example, 4478 + ... + 4566.

It is an arithmetic number, because the mean of its divisors is an integer number (24300).

2⁴⁰²⁴⁵⁸ is an apocalyptic number.

402458 is a deficient number, since it is larger than the sum of its proper divisors (375142).

402458 is a wasteful number, since it uses less digits than its factorization.

402458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 402458 is about 634.3957755219. The cubic root of 402458 is about 73.8312443747.

The spelling of 402458 in words is "four hundred two thousand, four hundred fifty-eight".