115221042 has 40 divisors (see below), whose sum is σ = 258903216. Its totient is φ = 38299608.

The previous prime is 115221023. The next prime is 115221049. The reversal of 115221042 is 240122511.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (115221049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 74893 + ... + 76415.

Almost surely, 2^115221042 is an apocalyptic number.

115221042 is an abundant number, since it is smaller than the sum of its proper divisors (143682174).

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

115221042 is a wasteful number, since it uses less digits than its factorization.

115221042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2004 (or 1995 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 115221042 is about 10734.1064835411. The cubic root of 115221042 is about 486.6057832345.

Adding to 115221042 its reverse (240122511), we get a palindrome (355343553).

The spelling of 115221042 in words is "one hundred fifteen million, two hundred twenty-one thousand, forty-two".