315556642 has 16 divisors (see below), whose sum is σ = 494857152. Its totient is φ = 150630480.

The previous prime is 315556613. The next prime is 315556649. The reversal of 315556642 is 246655513.

It is not an unprimeable number, because it can be changed into a prime (315556649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18892 + ... + 31432.

It is an arithmetic number, because the mean of its divisors is an integer number (30928572).

Almost surely, 2^315556642 is an apocalyptic number.

315556642 is a deficient number, since it is larger than the sum of its proper divisors (179300510).

315556642 is a wasteful number, since it uses less digits than its factorization.

315556642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13113.

The product of its digits is 108000, while the sum is 37.

The square root of 315556642 is about 17763.9140394227. The cubic root of 315556642 is about 680.8097634132.

The spelling of 315556642 in words is "three hundred fifteen million, five hundred fifty-six thousand, six hundred forty-two".