542243212636 has 24 divisors (see below), whose sum is σ = 967777209504. Its totient is φ = 265745463360.

The previous prime is 542243212547. The next prime is 542243212649. The reversal of 542243212636 is 636212342245.

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, 1036120 + ... + 1469023.

It is an arithmetic number, because the mean of its divisors is an integer number (40324050396).

Almost surely, 2^542243212636 is an apocalyptic number.

It is an amenable number.

542243212636 is a deficient number, since it is larger than the sum of its proper divisors (425533996868).

542243212636 is a wasteful number, since it uses less digits than its factorization.

542243212636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2506221 (or 2506219 counting only the distinct ones).

The product of its digits is 414720, while the sum is 40.

The spelling of 542243212636 in words is "five hundred forty-two billion, two hundred forty-three million, two hundred twelve thousand, six hundred thirty-six".