115121042 has 32 divisors (see below), whose sum is σ = 189941760. Its totient is φ = 52093440.

The previous prime is 115121029. The next prime is 115121047. The reversal of 115121042 is 240121511.

It is a super-2 number, since 2×115121042² = 26505708622331528, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 115121042.

It is not an unprimeable number, because it can be changed into a prime (115121047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 251678 + ... + 252134.

It is an arithmetic number, because the mean of its divisors is an integer number (5935680).

Almost surely, 2^115121042 is an apocalyptic number.

115121042 is a deficient number, since it is larger than the sum of its proper divisors (74820718).

115121042 is a wasteful number, since it uses less digits than its factorization.

115121042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 115121042 is about 10729.4474228639. The cubic root of 115121042 is about 486.4649679178.

Adding to 115121042 its reverse (240121511), we get a palindrome (355242553).

The spelling of 115121042 in words is "one hundred fifteen million, one hundred twenty-one thousand, forty-two".