2015120042115 has 32 divisors (see below), whose sum is σ = 3451409913600. Its totient is φ = 1000908858240.

The previous prime is 2015120042107. The next prime is 2015120042179. The reversal of 2015120042115 is 5112400215102.

It is a happy number.

It is not a de Polignac number, because 2015120042115 - 2³ = 2015120042107 is a prime.

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 in 31 ways as a sum of consecutive naturals, for example, 59903496 + ... + 59937125.

It is an arithmetic number, because the mean of its divisors is an integer number (107856559800).

Almost surely, 2^{2015120042115} is an apocalyptic number.

2015120042115 is a deficient number, since it is larger than the sum of its proper divisors (1436289871485).

2015120042115 is a wasteful number, since it uses less digits than its factorization.

2015120042115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119840707.

The product of its (nonzero) digits is 800, while the sum is 24.

Adding to 2015120042115 its reverse (5112400215102), we get a palindrome (7127520257217).

The spelling of 2015120042115 in words is "two trillion, fifteen billion, one hundred twenty million, forty-two thousand, one hundred fifteen".