542442542423531 has 32 divisors (see below), whose sum is σ = 585231438528000. Its totient is φ = 500897216881152.

The previous prime is 542442542423527. The next prime is 542442542423539. The reversal of 542442542423531 is 135324245244245.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 542442542423531 - 2² = 542442542423527 is a prime.

It is a super-2 number, since 2×542442542423531² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 542442542423531.

It is not an unprimeable number, because it can be changed into a prime (542442542423539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1499575970 + ... + 1499937656.

It is an arithmetic number, because the mean of its divisors is an integer number (18288482454000).

Almost surely, 2^{542442542423531} is an apocalyptic number.

542442542423531 is a deficient number, since it is larger than the sum of its proper divisors (42788896104469).

542442542423531 is a wasteful number, since it uses less digits than its factorization.

542442542423531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364691.

The product of its digits is 18432000, while the sum is 50.

Adding to 542442542423531 its reverse (135324245244245), we get a palindrome (677766787667776).

The spelling of 542442542423531 in words is "five hundred forty-two trillion, four hundred forty-two billion, five hundred forty-two million, four hundred twenty-three thousand, five hundred thirty-one".