404156242 has 32 divisors (see below), whose sum is σ = 700848000. Its totient is φ = 171220608.

The previous prime is 404156237. The next prime is 404156257. The reversal of 404156242 is 242651404.

It is a self number, because there is not a number n which added to its sum of digits gives 404156242.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 652609 + ... + 653227.

It is an arithmetic number, because the mean of its divisors is an integer number (21901500).

Almost surely, 2^404156242 is an apocalyptic number.

404156242 is a deficient number, since it is larger than the sum of its proper divisors (296691758).

404156242 is a wasteful number, since it uses less digits than its factorization.

404156242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090.

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 404156242 is about 20103.6375315513. The cubic root of 404156242 is about 739.3494660236.

The spelling of 404156242 in words is "four hundred four million, one hundred fifty-six thousand, two hundred forty-two".