542642879 has 8 divisors (see below), whose sum is σ = 566444160. Its totient is φ = 519235200.

The previous prime is 542642857. The next prime is 542642899. The reversal of 542642879 is 978246245.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 542642879 - 2⁸ = 542642623 is a prime.

It is a super-2 number, since 2×542642879² = 588922588258817282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542642899) 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 7 ways as a sum of consecutive naturals, for example, 95582 + ... + 101099.

It is an arithmetic number, because the mean of its divisors is an integer number (70805520).

Almost surely, 2^542642879 is an apocalyptic number.

542642879 is a deficient number, since it is larger than the sum of its proper divisors (23801281).

542642879 is a wasteful number, since it uses less digits than its factorization.

542642879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196801.

The product of its digits is 967680, while the sum is 47.

The square root of 542642879 is about 23294.6963706334. The cubic root of 542642879 is about 815.6516193345.

The spelling of 542642879 in words is "five hundred forty-two million, six hundred forty-two thousand, eight hundred seventy-nine".