542638136 has 32 divisors (see below), whose sum is σ = 1051747200. Its totient is φ = 262197120.

The previous prime is 542638099. The next prime is 542638139. The reversal of 542638136 is 631836245.

It is a super-2 number, since 2×542638136² = 588912293283108992, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 542638136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542638139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274046 + ... + 276018.

It is an arithmetic number, because the mean of its divisors is an integer number (32867100).

Almost surely, 2^542638136 is an apocalyptic number.

It is an amenable number.

542638136 is a deficient number, since it is larger than the sum of its proper divisors (509109064).

542638136 is a wasteful number, since it uses less digits than its factorization.

542638136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3119 (or 3115 counting only the distinct ones).

The product of its digits is 103680, while the sum is 38.

The square root of 542638136 is about 23294.5945661220. The cubic root of 542638136 is about 815.6492429116.

The spelling of 542638136 in words is "five hundred forty-two million, six hundred thirty-eight thousand, one hundred thirty-six".