318642 has 16 divisors (see below), whose sum is σ = 665280. Its totient is φ = 101552.

The previous prime is 318641. The next prime is 318653. The reversal of 318642 is 246813.

It is a happy number.

318642 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (318641) 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, 1017 + ... + 1292.

It is an arithmetic number, because the mean of its divisors is an integer number (41580).

2³¹⁸⁶⁴² is an apocalyptic number.

318642 is an abundant number, since it is smaller than the sum of its proper divisors (346638).

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

318642 is a wasteful number, since it uses less digits than its factorization.

318642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2337.

The product of its digits is 1152, while the sum is 24.

The square root of 318642 is about 564.4838350210. The cubic root of 318642 is about 68.3021445349.

The spelling of 318642 in words is "three hundred eighteen thousand, six hundred forty-two".