312942 has 16 divisors (see below), whose sum is σ = 715392. Its totient is φ = 89400.

The previous prime is 312941. The next prime is 312943. The reversal of 312942 is 249213.

312942 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (312941) and next prime (312943).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312941) 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, 3684 + ... + 3767.

It is an arithmetic number, because the mean of its divisors is an integer number (44712).

2³¹²⁹⁴² is an apocalyptic number.

312942 is an abundant number, since it is smaller than the sum of its proper divisors (402450).

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

312942 is a wasteful number, since it uses less digits than its factorization.

312942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7463.

The product of its digits is 432, while the sum is 21.

The square root of 312942 is about 559.4121915010. The cubic root of 312942 is about 67.8924192783.

The spelling of 312942 in words is "three hundred twelve thousand, nine hundred forty-two".