542121533524 has 48 divisors (see below), whose sum is σ = 1052399900160. Its totient is φ = 243201530880.

The previous prime is 542121533479. The next prime is 542121533537. The reversal of 542121533524 is 425335121245.

It is a happy number.

It is a super-2 number, since 2×542121533524² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1777969 + ... + 2060440.

It is an arithmetic number, because the mean of its divisors is an integer number (21924997920).

Almost surely, 2^542121533524 is an apocalyptic number.

It is an amenable number.

542121533524 is a deficient number, since it is larger than the sum of its proper divisors (510278366636).

542121533524 is a wasteful number, since it uses less digits than its factorization.

542121533524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3838528 (or 3838526 counting only the distinct ones).

The product of its digits is 144000, while the sum is 37.

Adding to 542121533524 its reverse (425335121245), we get a palindrome (967456654769).

The spelling of 542121533524 in words is "five hundred forty-two billion, one hundred twenty-one million, five hundred thirty-three thousand, five hundred twenty-four".