315742 has 16 divisors (see below), whose sum is σ = 570240. Its totient is φ = 128088.

The previous prime is 315739. The next prime is 315743. The reversal of 315742 is 247513.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315743) 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, 328 + ... + 859.

It is an arithmetic number, because the mean of its divisors is an integer number (35640).

2³¹⁵⁷⁴² is an apocalyptic number.

315742 is a deficient number, since it is larger than the sum of its proper divisors (254498).

315742 is a wasteful number, since it uses less digits than its factorization.

315742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215.

The product of its digits is 840, while the sum is 22.

The square root of 315742 is about 561.9092453413. The cubic root of 315742 is about 68.0943039893.

The spelling of 315742 in words is "three hundred fifteen thousand, seven hundred forty-two".