542515155532542 has 24 divisors (see below), whose sum is σ = 1175815801536480. Its totient is φ = 180782031657120.

The previous prime is 542515155532529. The next prime is 542515155532547. The reversal of 542515155532542 is 245235551515245.

It is a happy number.

542515155532542 is a `hidden beast` number, since 5 + 4 + 2 + 5 + 1 + 5 + 1 + 55 + 532 + 54 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542515155532547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4696067334 + ... + 4696182857.

It is an arithmetic number, because the mean of its divisors is an integer number (48992325064020).

Almost surely, 2^{542515155532542} is an apocalyptic number.

542515155532542 is an abundant number, since it is smaller than the sum of its proper divisors (633300646003938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

542515155532542 is a wasteful number, since it uses less digits than its factorization.

542515155532542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9392253408 (or 9392253405 counting only the distinct ones).

The product of its digits is 30000000, while the sum is 54.

The spelling of 542515155532542 in words is "five hundred forty-two trillion, five hundred fifteen billion, one hundred fifty-five million, five hundred thirty-two thousand, five hundred forty-two".