542242551 has 16 divisors (see below), whose sum is σ = 749468160. Its totient is φ = 348307680.

The previous prime is 542242537. The next prime is 542242553. The reversal of 542242551 is 155242245.

It is not a de Polignac number, because 542242551 - 2⁹ = 542242039 is a prime.

It is a super-2 number, since 2×542242551² = 588053968229975202, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542242553) 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 15 ways as a sum of consecutive naturals, for example, 37566 + ... + 49956.

It is an arithmetic number, because the mean of its divisors is an integer number (46841760).

Almost surely, 2^542242551 is an apocalyptic number.

542242551 is a deficient number, since it is larger than the sum of its proper divisors (207225609).

542242551 is a wasteful number, since it uses less digits than its factorization.

542242551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12926.

The product of its digits is 16000, while the sum is 30.

The square root of 542242551 is about 23286.1020997504. The cubic root of 542242551 is about 815.4509910610.

Adding to 542242551 its reverse (155242245), we get a palindrome (697484796).

The spelling of 542242551 in words is "five hundred forty-two million, two hundred forty-two thousand, five hundred fifty-one".