542445556 has 12 divisors (see below), whose sum is σ = 953463168. Its totient is φ = 270027512.

The previous prime is 542445523. The next prime is 542445557. The reversal of 542445556 is 655544245.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542445557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297796 + ... + 299611.

It is an arithmetic number, because the mean of its divisors is an integer number (79455264).

Almost surely, 2^542445556 is an apocalyptic number.

It is an amenable number.

542445556 is a deficient number, since it is larger than the sum of its proper divisors (411017612).

542445556 is a wasteful number, since it uses less digits than its factorization.

542445556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597638 (or 597636 counting only the distinct ones).

The product of its digits is 480000, while the sum is 40.

The square root of 542445556 is about 23290.4606223235. The cubic root of 542445556 is about 815.5527413288.

The spelling of 542445556 in words is "five hundred forty-two million, four hundred forty-five thousand, five hundred fifty-six".