542607639 has 8 divisors (see below), whose sum is σ = 826830720. Its totient is φ = 310061496.

The previous prime is 542607617. The next prime is 542607641. The reversal of 542607639 is 936706245.

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

It is not a de Polignac number, because 542607639 - 2⁷ = 542607511 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 542607639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542607679) 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, 12919209 + ... + 12919250.

It is an arithmetic number, because the mean of its divisors is an integer number (103353840).

Almost surely, 2^542607639 is an apocalyptic number.

542607639 is a deficient number, since it is larger than the sum of its proper divisors (284223081).

542607639 is a wasteful number, since it uses less digits than its factorization.

542607639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25838469.

The product of its (nonzero) digits is 272160, while the sum is 42.

The square root of 542607639 is about 23293.9399630033. The cubic root of 542607639 is about 815.6339624270.

The spelling of 542607639 in words is "five hundred forty-two million, six hundred seven thousand, six hundred thirty-nine".