542128556 has 12 divisors (see below), whose sum is σ = 952798392. Its totient is φ = 269900448.

The previous prime is 542128553. The next prime is 542128567. The reversal of 542128556 is 655821245.

It is not an unprimeable number, because it can be changed into a prime (542128553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 289910 + ... + 291773.

It is an arithmetic number, because the mean of its divisors is an integer number (79399866).

Almost surely, 2^542128556 is an apocalyptic number.

It is an amenable number.

542128556 is a deficient number, since it is larger than the sum of its proper divisors (410669836).

542128556 is a wasteful number, since it uses less digits than its factorization.

542128556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581920 (or 581918 counting only the distinct ones).

The product of its digits is 96000, while the sum is 38.

The square root of 542128556 is about 23283.6542664591. The cubic root of 542128556 is about 815.3938432954.

The spelling of 542128556 in words is "five hundred forty-two million, one hundred twenty-eight thousand, five hundred fifty-six".