2120042844 has 18 divisors (see below), whose sum is σ = 5358997280. Its totient is φ = 706680936.

The previous prime is 2120042843. The next prime is 2120042887. The reversal of 2120042844 is 4482400212.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120042843) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29445004 + ... + 29445075.

Almost surely, 2^2120042844 is an apocalyptic number.

It is an amenable number.

2120042844 is an abundant number, since it is smaller than the sum of its proper divisors (3238954436).

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

2120042844 is a wasteful number, since it uses less digits than its factorization.

2120042844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58890089 (or 58890084 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 27.

The square root of 2120042844 is about 46043.9229866440. The cubic root of 2120042844 is about 1284.6403115471.

The spelling of 2120042844 in words is "two billion, one hundred twenty million, forty-two thousand, eight hundred forty-four".