13125239 has 4 divisors (see below), whose sum is σ = 13147680. Its totient is φ = 13102800.

The previous prime is 13125223. The next prime is 13125251. The reversal of 13125239 is 93252131.

13125239 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13125239 - 2⁴ = 13125223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13125209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10319 + ... + 11520.

It is an arithmetic number, because the mean of its divisors is an integer number (3286920).

Almost surely, 2^13125239 is an apocalyptic number.

13125239 is a deficient number, since it is larger than the sum of its proper divisors (22441).

13125239 is an equidigital number, since it uses as much as digits as its factorization.

13125239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22440.

The product of its digits is 1620, while the sum is 26.

The square root of 13125239 is about 3622.8771715309. The cubic root of 13125239 is about 235.8861307898.

The spelling of 13125239 in words is "thirteen million, one hundred twenty-five thousand, two hundred thirty-nine".