13129942 has 12 divisors (see below), whose sum is σ = 22910580. Its totient is φ = 5627076.

The previous prime is 13129939. The next prime is 13129951. The reversal of 13129942 is 24992131.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 66892 + ... + 67087.

It is an arithmetic number, because the mean of its divisors is an integer number (1909215).

Almost surely, 2^13129942 is an apocalyptic number.

13129942 is a deficient number, since it is larger than the sum of its proper divisors (9780638).

13129942 is a wasteful number, since it uses less digits than its factorization.

13129942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133995 (or 133988 counting only the distinct ones).

The product of its digits is 3888, while the sum is 31.

The square root of 13129942 is about 3623.5261831536. The cubic root of 13129942 is about 235.9143014514.

The spelling of 13129942 in words is "thirteen million, one hundred twenty-nine thousand, nine hundred forty-two".