542839923 has 6 divisors (see below), whose sum is σ = 784102124. Its totient is φ = 361893276.

The previous prime is 542839901. The next prime is 542839931. The reversal of 542839923 is 329938245.

It is a happy number.

542839923 is a `hidden beast` number, since 542 + 83 + 9 + 9 + 23 = 666.

It is not a de Polignac number, because 542839923 - 2⁹ = 542839411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542839523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30157765 + ... + 30157782.

Almost surely, 2^542839923 is an apocalyptic number.

542839923 is a deficient number, since it is larger than the sum of its proper divisors (241262201).

542839923 is a wasteful number, since it uses less digits than its factorization.

542839923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60315553 (or 60315550 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 542839923 is about 23298.9253614839. The cubic root of 542839923 is about 815.7503336175.

The spelling of 542839923 in words is "five hundred forty-two million, eight hundred thirty-nine thousand, nine hundred twenty-three".