115162139 has 2 divisors, whose sum is σ = 115162140. Its totient is φ = 115162138.

The previous prime is 115162123. The next prime is 115162141. The reversal of 115162139 is 931261511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 115162139 - 2⁴ = 115162123 is a prime.

Together with 115162141, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (115162109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57581069 + 57581070.

It is an arithmetic number, because the mean of its divisors is an integer number (57581070).

Almost surely, 2^115162139 is an apocalyptic number.

115162139 is a deficient number, since it is larger than the sum of its proper divisors (1).

115162139 is an equidigital number, since it uses as much as digits as its factorization.

115162139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1620, while the sum is 29.

The square root of 115162139 is about 10731.3624018575. The cubic root of 115162139 is about 486.5228486547.

The spelling of 115162139 in words is "one hundred fifteen million, one hundred sixty-two thousand, one hundred thirty-nine".