542406020556 has 12 divisors (see below), whose sum is σ = 1265614047992. Its totient is φ = 180802006848.

The previous prime is 542406020509. The next prime is 542406020627. The reversal of 542406020556 is 655020604245.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×542406020556² (a number of 24 digits) contains 22 as substring.

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, 22600250845 + ... + 22600250868.

Almost surely, 2^542406020556 is an apocalyptic number.

It is an amenable number.

542406020556 is an abundant number, since it is smaller than the sum of its proper divisors (723208027436).

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

542406020556 is a wasteful number, since it uses less digits than its factorization.

542406020556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45200501720 (or 45200501718 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 39.

The spelling of 542406020556 in words is "five hundred forty-two billion, four hundred six million, twenty thousand, five hundred fifty-six".