12312742 has 16 divisors (see below), whose sum is σ = 19953360. Its totient is φ = 5664672.

The previous prime is 12312737. The next prime is 12312763. The reversal of 12312742 is 24721321.

It is a plaindrome in base 15.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 10984 + ... + 12052.

It is an arithmetic number, because the mean of its divisors is an integer number (1247085).

Almost surely, 2^12312742 is an apocalyptic number.

12312742 is a deficient number, since it is larger than the sum of its proper divisors (7640618).

12312742 is a wasteful number, since it uses less digits than its factorization.

12312742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1527.

The product of its digits is 672, while the sum is 22.

The square root of 12312742 is about 3508.9516953073. The cubic root of 12312742 is about 230.9147064901.

The spelling of 12312742 in words is "twelve million, three hundred twelve thousand, seven hundred forty-two".