318742 has 16 divisors (see below), whose sum is σ = 508032. Its totient is φ = 149760.

The previous prime is 318737. The next prime is 318743. The reversal of 318742 is 247813.

318742 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318743) by changing a digit.

318742 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, 3238 + ... + 3334.

It is an arithmetic number, because the mean of its divisors is an integer number (31752).

2³¹⁸⁷⁴² is an apocalyptic number.

318742 is a deficient number, since it is larger than the sum of its proper divisors (189290).

318742 is a wasteful number, since it uses less digits than its factorization.

318742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183.

The product of its digits is 1344, while the sum is 25.

The square root of 318742 is about 564.5724045683. The cubic root of 318742 is about 68.3092889164.

The spelling of 318742 in words is "three hundred eighteen thousand, seven hundred forty-two".