315105042 has 32 divisors (see below), whose sum is σ = 725750784. Its totient is φ = 89341200.

The previous prime is 315105041. The next prime is 315105059. The reversal of 315105042 is 240501513.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (315105041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23134 + ... + 34137.

It is an arithmetic number, because the mean of its divisors is an integer number (22679712).

Almost surely, 2^315105042 is an apocalyptic number.

315105042 is an abundant number, since it is smaller than the sum of its proper divisors (410645742).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

315105042 is a wasteful number, since it uses less digits than its factorization.

315105042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57414.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 315105042 is about 17751.1983257469. The cubic root of 315105042 is about 680.4848344540.

Adding to 315105042 its reverse (240501513), we get a palindrome (555606555).

The spelling of 315105042 in words is "three hundred fifteen million, one hundred five thousand, forty-two".