542729638 has 8 divisors (see below), whose sum is σ = 888103080. Its totient is φ = 246695280.

The previous prime is 542729591. The next prime is 542729651. The reversal of 542729638 is 836927245.

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

It is a super-2 number, since 2×542729638² = 589110919927222088, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 12334743 + ... + 12334786.

It is an arithmetic number, because the mean of its divisors is an integer number (111012885).

Almost surely, 2^542729638 is an apocalyptic number.

542729638 is a deficient number, since it is larger than the sum of its proper divisors (345373442).

542729638 is a wasteful number, since it uses less digits than its factorization.

542729638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24669542.

The product of its digits is 725760, while the sum is 46.

The square root of 542729638 is about 23296.5585012036. The cubic root of 542729638 is about 815.6950864412.

The spelling of 542729638 in words is "five hundred forty-two million, seven hundred twenty-nine thousand, six hundred thirty-eight".