542318840856 has 72 divisors (see below), whose sum is σ = 1590454328580. Its totient is φ = 166867331904.

The previous prime is 542318840821. The next prime is 542318840857. The reversal of 542318840856 is 658048813245.

542318840856 is a `hidden beast` number, since 5 + 4 + 2 + 3 + 188 + 408 + 56 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542318840857) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 22272466 + ... + 22296801.

Almost surely, 2^542318840856 is an apocalyptic number.

It is an amenable number.

542318840856 is an abundant number, since it is smaller than the sum of its proper divisors (1048135487724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

542318840856 is a wasteful number, since it uses less digits than its factorization.

542318840856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44569305 (or 44569285 counting only the distinct ones).

The product of its (nonzero) digits is 7372800, while the sum is 54.

The spelling of 542318840856 in words is "five hundred forty-two billion, three hundred eighteen million, eight hundred forty thousand, eight hundred fifty-six".