542185811 has 8 divisors (see below), whose sum is σ = 576803664. Its totient is φ = 507870720.

The previous prime is 542185793. The next prime is 542185823. The reversal of 542185811 is 118581245.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 542185811 - 2¹⁰ = 542184787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542185871) 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 7 ways as a sum of consecutive naturals, for example, 71990 + ... + 79163.

It is an arithmetic number, because the mean of its divisors is an integer number (72100458).

Almost surely, 2^542185811 is an apocalyptic number.

542185811 is a deficient number, since it is larger than the sum of its proper divisors (34617853).

542185811 is a wasteful number, since it uses less digits than its factorization.

542185811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151381.

The product of its digits is 12800, while the sum is 35.

The square root of 542185811 is about 23284.8837446099. The cubic root of 542185811 is about 815.4225472689.

The spelling of 542185811 in words is "five hundred forty-two million, one hundred eighty-five thousand, eight hundred eleven".