13042539 has 14 divisors (see below), whose sum is σ = 19555956. Its totient is φ = 8694540.

The previous prime is 13042529. The next prime is 13042559. The reversal of 13042539 is 93524031.

13042539 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13042539 - 2⁵ = 13042507 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (13042529) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 8217 + ... + 9674.

It is an arithmetic number, because the mean of its divisors is an integer number (1396854).

Almost surely, 2^13042539 is an apocalyptic number.

13042539 is a deficient number, since it is larger than the sum of its proper divisors (6513417).

13042539 is an frugal number, since it uses more digits than its factorization.

13042539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17909 (or 17894 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 13042539 is about 3611.4455554528. The cubic root of 13042539 is about 235.3896598600.

The spelling of 13042539 in words is "thirteen million, forty-two thousand, five hundred thirty-nine".