12939542 has 32 divisors (see below), whose sum is σ = 24551424. Its totient is φ = 4968000.

The previous prime is 12939541. The next prime is 12939571. The reversal of 12939542 is 24593921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12939541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10667 + ... + 11817.

It is an arithmetic number, because the mean of its divisors is an integer number (767232).

Almost surely, 2^12939542 is an apocalyptic number.

12939542 is a deficient number, since it is larger than the sum of its proper divisors (11611882).

12939542 is a wasteful number, since it uses less digits than its factorization.

12939542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1244.

The product of its digits is 19440, while the sum is 35.

The square root of 12939542 is about 3597.1574889070. The cubic root of 12939542 is about 234.7683971408.

The spelling of 12939542 in words is "twelve million, nine hundred thirty-nine thousand, five hundred forty-two".