12312542 has 16 divisors (see below), whose sum is σ = 20224512. Its totient is φ = 5575320.

The previous prime is 12312511. The next prime is 12312557. The reversal of 12312542 is 24521321.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5843 + ... + 7665.

It is an arithmetic number, because the mean of its divisors is an integer number (1264032).

Almost surely, 2^12312542 is an apocalyptic number.

12312542 is a deficient number, since it is larger than the sum of its proper divisors (7911970).

12312542 is a wasteful number, since it uses less digits than its factorization.

12312542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2143.

The product of its digits is 480, while the sum is 20.

The square root of 12312542 is about 3508.9231966516. The cubic root of 12312542 is about 230.9134562083.

Adding to 12312542 its reverse (24521321), we get a palindrome (36833863).

It can be divided in two parts, 1231 and 2542, that added together give a palindrome (3773).

The spelling of 12312542 in words is "twelve million, three hundred twelve thousand, five hundred forty-two".