2120056856 has 8 divisors (see below), whose sum is σ = 3975106620. Its totient is φ = 1060028424.

The previous prime is 2120056837. The next prime is 2120056903. The reversal of 2120056856 is 6586500212.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132503546 + ... + 132503561.

Almost surely, 2^2120056856 is an apocalyptic number.

It is an amenable number.

2120056856 is a deficient number, since it is larger than the sum of its proper divisors (1855049764).

2120056856 is a wasteful number, since it uses less digits than its factorization.

2120056856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265007113 (or 265007109 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 2120056856 is about 46044.0751454517. The cubic root of 2120056856 is about 1284.6431417321.

The spelling of 2120056856 in words is "two billion, one hundred twenty million, fifty-six thousand, eight hundred fifty-six".