115266139 has 4 divisors (see below), whose sum is σ = 115297560. Its totient is φ = 115234720.

The previous prime is 115266127. The next prime is 115266143. The reversal of 115266139 is 931662511.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115266139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115266199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9349 + ... + 17830.

It is an arithmetic number, because the mean of its divisors is an integer number (28824390).

Almost surely, 2^115266139 is an apocalyptic number.

115266139 is a deficient number, since it is larger than the sum of its proper divisors (31421).

115266139 is an equidigital number, since it uses as much as digits as its factorization.

115266139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31420.

The product of its digits is 9720, while the sum is 34.

The square root of 115266139 is about 10736.2069186468. The cubic root of 115266139 is about 486.6692600621.

The spelling of 115266139 in words is "one hundred fifteen million, two hundred sixty-six thousand, one hundred thirty-nine".