13239142 has 16 divisors (see below), whose sum is σ = 22932000. Its totient is φ = 5614848.

The previous prime is 13239137. The next prime is 13239199. The reversal of 13239142 is 24193231.

It is a congruent number.

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, 3517 + ... + 6232.

It is an arithmetic number, because the mean of its divisors is an integer number (1433250).

Almost surely, 2^13239142 is an apocalyptic number.

13239142 is a deficient number, since it is larger than the sum of its proper divisors (9692858).

13239142 is an equidigital number, since it uses as much as digits as its factorization.

13239142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9855.

The product of its digits is 1296, while the sum is 25.

The square root of 13239142 is about 3638.5631779591. The cubic root of 13239142 is about 236.5665193771.

The spelling of 13239142 in words is "thirteen million, two hundred thirty-nine thousand, one hundred forty-two".