542540556 has 36 divisors (see below), whose sum is σ = 1373600592. Its totient is φ = 180559584.

The previous prime is 542540549. The next prime is 542540623. The reversal of 542540556 is 655045245.

542540556 is a `hidden beast` number, since 54 + 2 + 54 + 0 + 556 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 542540556.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11646 + ... + 34938.

It is an arithmetic number, because the mean of its divisors is an integer number (38155572).

Almost surely, 2^542540556 is an apocalyptic number.

It is a pronic number, being equal to 23292×23293.

It is an amenable number.

542540556 is an abundant number, since it is smaller than the sum of its proper divisors (831060036).

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

542540556 is a wasteful number, since it uses less digits than its factorization.

542540556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23950 (or 23945 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

The square root of 542540556 is about 23292.4999946335. The cubic root of 542540556 is about 815.6003485569.

The spelling of 542540556 in words is "five hundred forty-two million, five hundred forty thousand, five hundred fifty-six".