542939636 has 12 divisors (see below), whose sum is σ = 951089412. Its totient is φ = 271199808.

The previous prime is 542939609. The next prime is 542939641. The reversal of 542939636 is 636939245.

It can be written as a sum of positive squares in 2 ways, for example, as 74476900 + 468462736 = 8630^2 + 21644^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62945 + ... + 71048.

It is an arithmetic number, because the mean of its divisors is an integer number (79257451).

Almost surely, 2^542939636 is an apocalyptic number.

It is an amenable number.

542939636 is a deficient number, since it is larger than the sum of its proper divisors (408149776).

542939636 is a wasteful number, since it uses less digits than its factorization.

542939636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135010 (or 135008 counting only the distinct ones).

The product of its digits is 1049760, while the sum is 47.

The square root of 542939636 is about 23301.0651258692. The cubic root of 542939636 is about 815.8002783186.

The spelling of 542939636 in words is "five hundred forty-two million, nine hundred thirty-nine thousand, six hundred thirty-six".