542800142721 has 24 divisors (see below), whose sum is σ = 798295992000. Its totient is φ = 355304027232.

The previous prime is 542800142701. The next prime is 542800142777. The reversal of 542800142721 is 127241008245.

542800142721 is a `hidden beast` number, since 542 + 8 + 0 + 0 + 1 + 42 + 72 + 1 = 666.

It is not a de Polignac number, because 542800142721 - 2⁶ = 542800142657 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (542800142701) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 176341 + ... + 1056738.

It is an arithmetic number, because the mean of its divisors is an integer number (33262333000).

Almost surely, 2^542800142721 is an apocalyptic number.

It is an amenable number.

542800142721 is a deficient number, since it is larger than the sum of its proper divisors (255495849279).

542800142721 is a wasteful number, since it uses less digits than its factorization.

542800142721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1233973 (or 1233970 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The spelling of 542800142721 in words is "five hundred forty-two billion, eight hundred million, one hundred forty-two thousand, seven hundred twenty-one".