2120940256 has 24 divisors (see below), whose sum is σ = 4272710904. Its totient is φ = 1035807360.

The previous prime is 2120940181. The next prime is 2120940277. The reversal of 2120940256 is 6520490212.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 769315 + ... + 772066.

It is an arithmetic number, because the mean of its divisors is an integer number (178029621).

Almost surely, 2^2120940256 is an apocalyptic number.

It is an amenable number.

2120940256 is an abundant number, since it is smaller than the sum of its proper divisors (2151770648).

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

2120940256 is a wasteful number, since it uses less digits than its factorization.

2120940256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1541434 (or 1541426 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 2120940256 is about 46053.6671286880. The cubic root of 2120940256 is about 1284.8215482936.

The spelling of 2120940256 in words is "two billion, one hundred twenty million, nine hundred forty thousand, two hundred fifty-six".