542634638 has 16 divisors (see below), whose sum is σ = 1001787360. Its totient is φ = 214668576.

The previous prime is 542634583. The next prime is 542634643. The reversal of 542634638 is 836436245.

542634638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 542634595 and 542634604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1490573 + ... + 1490936.

It is an arithmetic number, because the mean of its divisors is an integer number (62611710).

Almost surely, 2^542634638 is an apocalyptic number.

542634638 is a deficient number, since it is larger than the sum of its proper divisors (459152722).

542634638 is a wasteful number, since it uses less digits than its factorization.

542634638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2981531.

The product of its digits is 414720, while the sum is 41.

The square root of 542634638 is about 23294.5194842049. The cubic root of 542634638 is about 815.6474902720.

The spelling of 542634638 in words is "five hundred forty-two million, six hundred thirty-four thousand, six hundred thirty-eight".