115105242 has 16 divisors (see below), whose sum is σ = 263097792. Its totient is φ = 32887200.

The previous prime is 115105223. The next prime is 115105267. The reversal of 115105242 is 242501511.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1370259 + ... + 1370342.

It is an arithmetic number, because the mean of its divisors is an integer number (16443612).

Almost surely, 2^115105242 is an apocalyptic number.

115105242 is an abundant number, since it is smaller than the sum of its proper divisors (147992550).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

115105242 is a wasteful number, since it uses less digits than its factorization.

115105242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2740613.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 115105242 is about 10728.7111061861. The cubic root of 115105242 is about 486.4427116386.

Adding to 115105242 its reverse (242501511), we get a palindrome (357606753).

The spelling of 115105242 in words is "one hundred fifteen million, one hundred five thousand, two hundred forty-two".