2015042100 has 72 divisors (see below), whose sum is σ = 5834709888. Its totient is φ = 536928000.

The previous prime is 2015042077. The next prime is 2015042101. The reversal of 2015042100 is 12405102.

2015042100 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2015042100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2015042101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 703872 + ... + 706728.

Almost surely, 2^2015042100 is an apocalyptic number.

2015042100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2015042100 is an abundant number, since it is smaller than the sum of its proper divisors (3819667788).

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

2015042100 is a wasteful number, since it uses less digits than its factorization.

2015042100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5225 (or 5218 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 2015042100 is about 44889.2203095576. The cubic root of 2015042100 is about 1263.0718071173.

Adding to 2015042100 its reverse (12405102), we get a palindrome (2027447202).

The spelling of 2015042100 in words is "two billion, fifteen million, forty-two thousand, one hundred".