312542 has 12 divisors (see below), whose sum is σ = 490848. Its totient is φ = 149100.

The previous prime is 312527. The next prime is 312551. The reversal of 312542 is 245213.

It is a self number, because there is not a number n which added to its sum of digits gives 312542.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 312542.

It is an unprimeable number.

312542 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 5 ways as a sum of consecutive naturals, for example, 4367 + ... + 4437.

It is an arithmetic number, because the mean of its divisors is an integer number (40904).

2³¹²⁵⁴² is an apocalyptic number.

312542 is a deficient number, since it is larger than the sum of its proper divisors (178306).

312542 is an equidigital number, since it uses as much as digits as its factorization.

312542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175 (or 104 counting only the distinct ones).

The product of its digits is 240, while the sum is 17.

The square root of 312542 is about 559.0545590548. The cubic root of 312542 is about 67.8634804264.

Adding to 312542 its reverse (245213), we get a palindrome (557755).

The spelling of 312542 in words is "three hundred twelve thousand, five hundred forty-two".