13539442 has 16 divisors (see below), whose sum is σ = 23308992. Its totient is φ = 5778000.

The previous prime is 13539439. The next prime is 13539451. The reversal of 13539442 is 24493531.

13539442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1588 + ... + 5440.

It is an arithmetic number, because the mean of its divisors is an integer number (1456812).

Almost surely, 2^13539442 is an apocalyptic number.

13539442 is a deficient number, since it is larger than the sum of its proper divisors (9769550).

13539442 is a wasteful number, since it uses less digits than its factorization.

13539442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4113.

The product of its digits is 12960, while the sum is 31.

The square root of 13539442 is about 3679.5980758773. The cubic root of 13539442 is about 238.3418222263.

The spelling of 13539442 in words is "thirteen million, five hundred thirty-nine thousand, four hundred forty-two".