2015120142 has 24 divisors (see below), whose sum is σ = 4989821616. Its totient is φ = 575748576.

The previous prime is 2015120123. The next prime is 2015120167. The reversal of 2015120142 is 2410215102.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7996383 + ... + 7996634.

It is an arithmetic number, because the mean of its divisors is an integer number (207909234).

Almost surely, 2^2015120142 is an apocalyptic number.

2015120142 is an abundant number, since it is smaller than the sum of its proper divisors (2974701474).

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

2015120142 is a wasteful number, since it uses less digits than its factorization.

2015120142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15993032 (or 15993029 counting only the distinct ones).

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

The square root of 2015120142 is about 44890.0895744261. The cubic root of 2015120142 is about 1263.0881130425.

Adding to 2015120142 its reverse (2410215102), we get a palindrome (4425335244).

The spelling of 2015120142 in words is "two billion, fifteen million, one hundred twenty thousand, one hundred forty-two".