2521012842 has 32 divisors (see below), whose sum is σ = 5845829760. Its totient is φ = 803800800.

The previous prime is 2521012789. The next prime is 2521012861. The reversal of 2521012842 is 2482101252.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1013659 + ... + 1016142.

It is an arithmetic number, because the mean of its divisors is an integer number (182682180).

Almost surely, 2^2521012842 is an apocalyptic number.

2521012842 is an abundant number, since it is smaller than the sum of its proper divisors (3324816918).

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

2521012842 is a wasteful number, since it uses less digits than its factorization.

2521012842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2029835 (or 2029829 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 2521012842 is about 50209.6887263803. The cubic root of 2521012842 is about 1361.0007127990. Note that the first 3 decimals are identical.

The spelling of 2521012842 in words is "two billion, five hundred twenty-one million, twelve thousand, eight hundred forty-two".