20542924 has 6 divisors (see below), whose sum is σ = 35950124. Its totient is φ = 10271460.

The previous prime is 20542889. The next prime is 20542939. The reversal of 20542924 is 42924502.

It is a junction number, because it is equal to n+sod(n) for n = 20542892 and 20542901.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2567862 + ... + 2567869.

Almost surely, 2^20542924 is an apocalyptic number.

It is an amenable number.

20542924 is a deficient number, since it is larger than the sum of its proper divisors (15407200).

20542924 is a wasteful number, since it uses less digits than its factorization.

20542924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5135735 (or 5135733 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 20542924 is about 4532.4302531865. The cubic root of 20542924 is about 273.8760694807.

The spelling of 20542924 in words is "twenty million, five hundred forty-two thousand, nine hundred twenty-four".