115206615242 has 4 divisors (see below), whose sum is σ = 172809922866. Its totient is φ = 57603307620.

The previous prime is 115206615169. The next prime is 115206615253. The reversal of 115206615242 is 242516602511.

It is a Cunningham number, because it is equal to 339421²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 242516602511 = 47 ⋅5159927713.

It can be written as a sum of positive squares in only one way, i.e., 115206615241 + 1 = 339421^2 + 1^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28801653809 + ... + 28801653812.

Almost surely, 2^115206615242 is an apocalyptic number.

115206615242 is a deficient number, since it is larger than the sum of its proper divisors (57603307624).

115206615242 is an equidigital number, since it uses as much as digits as its factorization.

115206615242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57603307623.

The product of its (nonzero) digits is 28800, while the sum is 35.

The spelling of 115206615242 in words is "one hundred fifteen billion, two hundred six million, six hundred fifteen thousand, two hundred forty-two".