115100042 has 4 divisors (see below), whose sum is σ = 172650066. Its totient is φ = 57550020.

The previous prime is 115100023. The next prime is 115100053. The reversal of 115100042 is 240001511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 240001511 = 61 ⋅3934451.

It can be written as a sum of positive squares in only one way, i.e., 109851361 + 5248681 = 10481^2 + 2291^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 28775009 + ... + 28775012.

Almost surely, 2^115100042 is an apocalyptic number.

115100042 is a deficient number, since it is larger than the sum of its proper divisors (57550024).

115100042 is an equidigital number, since it uses as much as digits as its factorization.

115100042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57550023.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 115100042 is about 10728.4687630621. The cubic root of 115100042 is about 486.4353863418.

Adding to 115100042 its reverse (240001511), we get a palindrome (355101553).

The spelling of 115100042 in words is "one hundred fifteen million, one hundred thousand, forty-two".