542512512145021 has 16 divisors (see below), whose sum is σ = 626912013305088. Its totient is φ = 463984388032000.

The previous prime is 542512512145013. The next prime is 542512512145031. The reversal of 542512512145021 is 120541215215245.

It is not a de Polignac number, because 542512512145021 - 2³ = 542512512145013 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 (542512512145031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 616560880 + ... + 617440153.

It is an arithmetic number, because the mean of its divisors is an integer number (39182000831568).

Almost surely, 2^{542512512145021} is an apocalyptic number.

It is an amenable number.

542512512145021 is a deficient number, since it is larger than the sum of its proper divisors (84399501160067).

542512512145021 is a wasteful number, since it uses less digits than its factorization.

542512512145021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1234003412.

The product of its (nonzero) digits is 160000, while the sum is 40.

The spelling of 542512512145021 in words is "five hundred forty-two trillion, five hundred twelve billion, five hundred twelve million, one hundred forty-five thousand, twenty-one".