115242538 has 4 divisors (see below), whose sum is σ = 172863810. Its totient is φ = 57621268.

The previous prime is 115242529. The next prime is 115242551. The reversal of 115242538 is 835242511.

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

It can be written as a sum of positive squares in only one way, i.e., 108097609 + 7144929 = 10397^2 + 2673^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28810633 + ... + 28810636.

Almost surely, 2^115242538 is an apocalyptic number.

115242538 is a deficient number, since it is larger than the sum of its proper divisors (57621272).

115242538 is an equidigital number, since it uses as much as digits as its factorization.

115242538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57621271.

The product of its digits is 9600, while the sum is 31.

The square root of 115242538 is about 10735.1077311781. The cubic root of 115242538 is about 486.6360422547.

The spelling of 115242538 in words is "one hundred fifteen million, two hundred forty-two thousand, five hundred thirty-eight".