5642734923 has 24 divisors (see below), whose sum is σ = 9719993088. Its totient is φ = 3084226992.

The previous prime is 5642734897. The next prime is 5642734939. The reversal of 5642734923 is 3294372465.

5642734923 is a `hidden beast` number, since 56 + 42 + 73 + 492 + 3 = 666.

It is not a de Polignac number, because 5642734923 - 2⁶ = 5642734859 is a prime.

It is a super-2 number, since 2×5642734923² = 63680914822487631858, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5642734973) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1945665 + ... + 1948562.

It is an arithmetic number, because the mean of its divisors is an integer number (404999712).

Almost surely, 2^5642734923 is an apocalyptic number.

5642734923 is a deficient number, since it is larger than the sum of its proper divisors (4077258165).

5642734923 is a wasteful number, since it uses less digits than its factorization.

5642734923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3894263 (or 3894260 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 45.

The square root of 5642734923 is about 75118.1397732931. The cubic root of 5642734923 is about 1780.3137648082.

The spelling of 5642734923 in words is "five billion, six hundred forty-two million, seven hundred thirty-four thousand, nine hundred twenty-three".