13120139 has 2 divisors, whose sum is σ = 13120140. Its totient is φ = 13120138.

The previous prime is 13120111. The next prime is 13120153. The reversal of 13120139 is 93102131.

It is a strong prime.

It is an emirp because it is prime and its reverse (93102131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13120139 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13120139.

It is not a weakly prime, because it can be changed into another prime (13120199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6560069 + 6560070.

It is an arithmetic number, because the mean of its divisors is an integer number (6560070).

Almost surely, 2^13120139 is an apocalyptic number.

13120139 is a deficient number, since it is larger than the sum of its proper divisors (1).

13120139 is an equidigital number, since it uses as much as digits as its factorization.

13120139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 13120139 is about 3622.1732426818. The cubic root of 13120139 is about 235.8555745179.

The spelling of 13120139 in words is "thirteen million, one hundred twenty thousand, one hundred thirty-nine".