542297233921 has 2 divisors, whose sum is σ = 542297233922. Its totient is φ = 542297233920.

The previous prime is 542297233909. The next prime is 542297233943. The reversal of 542297233921 is 129332792245.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 510275920896 + 32021313025 = 714336^2 + 178945^2 .

It is a cyclic number.

It is not a de Polignac number, because 542297233921 - 2¹⁷ = 542297102849 is a prime.

It is not a weakly prime, because it can be changed into another prime (542297293921) 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 as a sum of consecutive naturals, namely, 271148616960 + 271148616961.

It is an arithmetic number, because the mean of its divisors is an integer number (271148616961).

Almost surely, 2^542297233921 is an apocalyptic number.

It is an amenable number.

542297233921 is a deficient number, since it is larger than the sum of its proper divisors (1).

542297233921 is an equidigital number, since it uses as much as digits as its factorization.

542297233921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1632960, while the sum is 49.

The spelling of 542297233921 in words is "five hundred forty-two billion, two hundred ninety-seven million, two hundred thirty-three thousand, nine hundred twenty-one".