2157124 has 12 divisors (see below), whose sum is σ = 3939264. Its totient is φ = 1031624.

The previous prime is 2157121. The next prime is 2157131. The reversal of 2157124 is 4217512.

It is a happy number.

It is a super-3 number, since 3×2157124³ = 30112484333784007872, which contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2157095 and 2157104.

It is not an unprimeable number, because it can be changed into a prime (2157121) 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, 11632 + ... + 11815.

It is an arithmetic number, because the mean of its divisors is an integer number (328272).

2^2157124 is an apocalyptic number.

It is an amenable number.

2157124 is a deficient number, since it is larger than the sum of its proper divisors (1782140).

2157124 is a wasteful number, since it uses less digits than its factorization.

2157124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23474 (or 23472 counting only the distinct ones).

The product of its digits is 560, while the sum is 22.

The square root of 2157124 is about 1468.7150846914. The cubic root of 2157124 is about 129.2086841220.

The spelling of 2157124 in words is "two million, one hundred fifty-seven thousand, one hundred twenty-four".