542439679 has 2 divisors, whose sum is σ = 542439680. Its totient is φ = 542439678.

The previous prime is 542439673. The next prime is 542439707. The reversal of 542439679 is 976934245.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 542439679 - 2¹⁵ = 542406911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542439673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271219839 + 271219840.

It is an arithmetic number, because the mean of its divisors is an integer number (271219840).

Almost surely, 2^542439679 is an apocalyptic number.

542439679 is a deficient number, since it is larger than the sum of its proper divisors (1).

542439679 is an equidigital number, since it uses as much as digits as its factorization.

542439679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1632960, while the sum is 49.

The square root of 542439679 is about 23290.3344544470. The cubic root of 542439679 is about 815.5497960128.

The spelling of 542439679 in words is "five hundred forty-two million, four hundred thirty-nine thousand, six hundred seventy-nine".