12539142 has 96 divisors (see below), whose sum is σ = 34594560. Its totient is φ = 3188160.

The previous prime is 12539113. The next prime is 12539161. The reversal of 12539142 is 24193521.

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 47 ways as a sum of consecutive naturals, for example, 114984 + ... + 115092.

It is an arithmetic number, because the mean of its divisors is an integer number (360360).

Almost surely, 2^12539142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12539142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17297280).

12539142 is an abundant number, since it is smaller than the sum of its proper divisors (22055418).

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

12539142 is a wasteful number, since it uses less digits than its factorization.

12539142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218 (or 215 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 12539142 is about 3541.0650940077. The cubic root of 12539142 is about 232.3214306981.

The spelling of 12539142 in words is "twelve million, five hundred thirty-nine thousand, one hundred forty-two".