2157380124 has 12 divisors (see below), whose sum is σ = 5033886984. Its totient is φ = 719126704.

The previous prime is 2157380123. The next prime is 2157380131. The reversal of 2157380124 is 4210837512.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2157380123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89890827 + ... + 89890850.

It is an arithmetic number, because the mean of its divisors is an integer number (419490582).

Almost surely, 2^2157380124 is an apocalyptic number.

It is an amenable number.

2157380124 is an abundant number, since it is smaller than the sum of its proper divisors (2876506860).

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

2157380124 is a wasteful number, since it uses less digits than its factorization.

2157380124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179781684 (or 179781682 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 2157380124 is about 46447.6062246484. The cubic root of 2157380124 is about 1292.1379774174.

The spelling of 2157380124 in words is "two billion, one hundred fifty-seven million, three hundred eighty thousand, one hundred twenty-four".