542043111 has 4 divisors (see below), whose sum is σ = 722724152. Its totient is φ = 361362072.

The previous prime is 542043107. The next prime is 542043163. The reversal of 542043111 is 111340245.

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

It is not a de Polignac number, because 542043111 - 2² = 542043107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542043101) 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, 90340516 + ... + 90340521.

It is an arithmetic number, because the mean of its divisors is an integer number (180681038).

Almost surely, 2^542043111 is an apocalyptic number.

542043111 is a deficient number, since it is larger than the sum of its proper divisors (180681041).

542043111 is a wasteful number, since it uses less digits than its factorization.

542043111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180681040.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 542043111 is about 23281.8193232402. The cubic root of 542043111 is about 815.3510029108.

Adding to 542043111 its reverse (111340245), we get a palindrome (653383356).

The spelling of 542043111 in words is "five hundred forty-two million, forty-three thousand, one hundred eleven".