542566540 has 12 divisors (see below), whose sum is σ = 1139389776. Its totient is φ = 217026608.

The previous prime is 542566529. The next prime is 542566627. The reversal of 542566540 is 45665245.

It is a self number, because there is not a number n which added to its sum of digits gives 542566540.

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, 13564144 + ... + 13564183.

It is an arithmetic number, because the mean of its divisors is an integer number (94949148).

Almost surely, 2^542566540 is an apocalyptic number.

It is an amenable number.

542566540 is an abundant number, since it is smaller than the sum of its proper divisors (596823236).

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

542566540 is a wasteful number, since it uses less digits than its factorization.

542566540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27128336 (or 27128334 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 37.

The square root of 542566540 is about 23293.0577640635. The cubic root of 542566540 is about 815.6133689176.

The spelling of 542566540 in words is "five hundred forty-two million, five hundred sixty-six thousand, five hundred forty".