542142121816 has 32 divisors (see below), whose sum is σ = 1089935784000. Its totient is φ = 251896260096.

The previous prime is 542142121813. The next prime is 542142121831. The reversal of 542142121816 is 618121241245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542142121811) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 25219251 + ... + 25240738.

It is an arithmetic number, because the mean of its divisors is an integer number (34060493250).

Almost surely, 2^542142121816 is an apocalyptic number.

It is an amenable number.

542142121816 is an abundant number, since it is smaller than the sum of its proper divisors (547793662184).

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

542142121816 is a wasteful number, since it uses less digits than its factorization.

542142121816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50460091 (or 50460087 counting only the distinct ones).

The product of its digits is 30720, while the sum is 37.

The spelling of 542142121816 in words is "five hundred forty-two billion, one hundred forty-two million, one hundred twenty-one thousand, eight hundred sixteen".