315642 has 16 divisors (see below), whose sum is σ = 652032. Its totient is φ = 101760.

The previous prime is 315631. The next prime is 315643. The reversal of 315642 is 246513.

It is a happy number.

315642 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (315643) by changing a digit.

315642 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 663 + ... + 1034.

It is an arithmetic number, because the mean of its divisors is an integer number (40752).

2³¹⁵⁶⁴² is an apocalyptic number.

315642 is an abundant number, since it is smaller than the sum of its proper divisors (336390).

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

315642 is a wasteful number, since it uses less digits than its factorization.

315642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1733.

The product of its digits is 720, while the sum is 21.

The square root of 315642 is about 561.8202559538. The cubic root of 315642 is about 68.0871144174.

The spelling of 315642 in words is "three hundred fifteen thousand, six hundred forty-two".