13129642 has 16 divisors (see below), whose sum is σ = 20816640. Its totient is φ = 6198192.

The previous prime is 13129639. The next prime is 13129643. The reversal of 13129642 is 24692131.

13129642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×13129642³ (a number of 22 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13129642.

It is not an unprimeable number, because it can be changed into a prime (13129643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1828 + ... + 5440.

It is an arithmetic number, because the mean of its divisors is an integer number (1301040).

Almost surely, 2^13129642 is an apocalyptic number.

13129642 is a deficient number, since it is larger than the sum of its proper divisors (7686998).

13129642 is a wasteful number, since it uses less digits than its factorization.

13129642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3717.

The product of its digits is 2592, while the sum is 28.

The square root of 13129642 is about 3623.4847867764. The cubic root of 13129642 is about 235.9125046719.

The spelling of 13129642 in words is "thirteen million, one hundred twenty-nine thousand, six hundred forty-two".