542428679 has 4 divisors (see below), whose sum is σ = 584153976. Its totient is φ = 500703384.

The previous prime is 542428651. The next prime is 542428697. The reversal of 542428679 is 976824245.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 976824245 = 5 ⋅195364849.

It is a cyclic number.

It is not a de Polignac number, because 542428679 - 2²⁴ = 525651463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542428079) 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, 20862629 + ... + 20862654.

It is an arithmetic number, because the mean of its divisors is an integer number (146038494).

Almost surely, 2^542428679 is an apocalyptic number.

542428679 is a deficient number, since it is larger than the sum of its proper divisors (41725297).

542428679 is a wasteful number, since it uses less digits than its factorization.

542428679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41725296.

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

The square root of 542428679 is about 23290.0983037857. The cubic root of 542428679 is about 815.5442831981.

The spelling of 542428679 in words is "five hundred forty-two million, four hundred twenty-eight thousand, six hundred seventy-nine".