542371811 has 4 divisors (see below), whose sum is σ = 542686512. Its totient is φ = 542057112.

The previous prime is 542371799. The next prime is 542371831. The reversal of 542371811 is 118173245.

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

It is a cyclic number.

It is not a de Polignac number, because 542371811 - 2⁶ = 542371747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542371831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154751 + ... + 158216.

It is an arithmetic number, because the mean of its divisors is an integer number (135671628).

Almost surely, 2^542371811 is an apocalyptic number.

542371811 is a deficient number, since it is larger than the sum of its proper divisors (314701).

542371811 is a wasteful number, since it uses less digits than its factorization.

542371811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314700.

The product of its digits is 6720, while the sum is 32.

The square root of 542371811 is about 23288.8774096134. The cubic root of 542371811 is about 815.5157817594.

The spelling of 542371811 in words is "five hundred forty-two million, three hundred seventy-one thousand, eight hundred eleven".