542168554 has 4 divisors (see below), whose sum is σ = 813252834. Its totient is φ = 271084276.

The previous prime is 542168551. The next prime is 542168563. The reversal of 542168554 is 455861245.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 537173329 + 4995225 = 23177^2 + 2235^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (542168551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135542137 + ... + 135542140.

Almost surely, 2^542168554 is an apocalyptic number.

542168554 is a deficient number, since it is larger than the sum of its proper divisors (271084280).

542168554 is a wasteful number, since it uses less digits than its factorization.

542168554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271084279.

The product of its digits is 192000, while the sum is 40.

The square root of 542168554 is about 23284.5131793645. The cubic root of 542168554 is about 815.4138959321.

The spelling of 542168554 in words is "five hundred forty-two million, one hundred sixty-eight thousand, five hundred fifty-four".