2015042172 has 48 divisors (see below), whose sum is σ = 5523756672. Its totient is φ = 563647680.

The previous prime is 2015042171. The next prime is 2015042189. The reversal of 2015042172 is 2712405102.

2015042172 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2015042171) 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, 585418 + ... + 588849.

It is an arithmetic number, because the mean of its divisors is an integer number (115078264).

Almost surely, 2^2015042172 is an apocalyptic number.

2015042172 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2015042172 is an abundant number, since it is smaller than the sum of its proper divisors (3508714500).

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

2015042172 is a wasteful number, since it uses less digits than its factorization.

2015042172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174298 (or 1174296 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 2015042172 is about 44889.2211115319. The cubic root of 2015042172 is about 1263.0718221610.

Adding to 2015042172 its reverse (2712405102), we get a palindrome (4727447274).

The spelling of 2015042172 in words is "two billion, fifteen million, forty-two thousand, one hundred seventy-two".