2142112856 has 24 divisors (see below), whose sum is σ = 4349188980. Its totient is φ = 988666848.

The previous prime is 2142112849. The next prime is 2142112871. The reversal of 2142112856 is 6582112412.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 790850 + ... + 793553.

Almost surely, 2^2142112856 is an apocalyptic number.

2142112856 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2142112856 is an abundant number, since it is smaller than the sum of its proper divisors (2207076124).

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

2142112856 is a wasteful number, since it uses less digits than its factorization.

2142112856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1584435 (or 1584418 counting only the distinct ones).

The product of its digits is 7680, while the sum is 32.

The square root of 2142112856 is about 46282.9650735560. The cubic root of 2142112856 is about 1289.0827074604.

The spelling of 2142112856 in words is "two billion, one hundred forty-two million, one hundred twelve thousand, eight hundred fifty-six".