404518042 has 16 divisors (see below), whose sum is σ = 638344800. Its totient is φ = 191973040.

The previous prime is 404518031. The next prime is 404518063. The reversal of 404518042 is 240815404.

It is a self number, because there is not a number n which added to its sum of digits gives 404518042.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55684 + ... + 62527.

It is an arithmetic number, because the mean of its divisors is an integer number (39896550).

Almost surely, 2^404518042 is an apocalyptic number.

404518042 is a deficient number, since it is larger than the sum of its proper divisors (233826758).

404518042 is a wasteful number, since it uses less digits than its factorization.

404518042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118301.

The product of its (nonzero) digits is 5120, while the sum is 28.

The square root of 404518042 is about 20112.6338901696. The cubic root of 404518042 is about 739.5700216964.

The spelling of 404518042 in words is "four hundred four million, five hundred eighteen thousand, forty-two".