312542142 has 32 divisors (see below), whose sum is σ = 691524864. Its totient is φ = 93374400.

The previous prime is 312542137. The next prime is 312542149. The reversal of 312542142 is 241245213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312542149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28663 + ... + 38034.

It is an arithmetic number, because the mean of its divisors is an integer number (21610152).

Almost surely, 2^312542142 is an apocalyptic number.

312542142 is an abundant number, since it is smaller than the sum of its proper divisors (378982722).

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

312542142 is a wasteful number, since it uses less digits than its factorization.

312542142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66784.

The product of its digits is 1920, while the sum is 24.

The square root of 312542142 is about 17678.8614452402. The cubic root of 312542142 is about 678.6349070409.

Adding to 312542142 its reverse (241245213), we get a palindrome (553787355).

The spelling of 312542142 in words is "three hundred twelve million, five hundred forty-two thousand, one hundred forty-two".