13122539 has 2 divisors, whose sum is σ = 13122540. Its totient is φ = 13122538.

The previous prime is 13122533. The next prime is 13122547. The reversal of 13122539 is 93522131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13122539 - 2⁴ = 13122523 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13122533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6561269 + 6561270.

It is an arithmetic number, because the mean of its divisors is an integer number (6561270).

Almost surely, 2^13122539 is an apocalyptic number.

13122539 is a deficient number, since it is larger than the sum of its proper divisors (1).

13122539 is an equidigital number, since it uses as much as digits as its factorization.

13122539 is an evil number, because the sum of its binary digits is even.

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

The square root of 13122539 is about 3622.5045203560. The cubic root of 13122539 is about 235.8699549262.

The spelling of 13122539 in words is "thirteen million, one hundred twenty-two thousand, five hundred thirty-nine".