13239542 has 16 divisors (see below), whose sum is σ = 21580800. Its totient is φ = 6068520.

The previous prime is 13239539. The next prime is 13239613. The reversal of 13239542 is 24593231.

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 7 ways as a sum of consecutive naturals, for example, 4442 + ... + 6797.

It is an arithmetic number, because the mean of its divisors is an integer number (1348800).

Almost surely, 2^13239542 is an apocalyptic number.

13239542 is a deficient number, since it is larger than the sum of its proper divisors (8341258).

13239542 is a wasteful number, since it uses less digits than its factorization.

13239542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11291.

The product of its digits is 6480, while the sum is 29.

The square root of 13239542 is about 3638.6181442960. The cubic root of 13239542 is about 236.5689018491.

The spelling of 13239542 in words is "thirteen million, two hundred thirty-nine thousand, five hundred forty-two".