542602424205221 has 2 divisors, whose sum is σ = 542602424205222. Its totient is φ = 542602424205220.

The previous prime is 542602424205199. The next prime is 542602424205223. The reversal of 542602424205221 is 122502424206245.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 334820866168321 + 207781558036900 = 18298111^2 + 14414630^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-542602424205221 is a prime.

Together with 542602424205223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542602424205223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271301212102610 + 271301212102611.

It is an arithmetic number, because the mean of its divisors is an integer number (271301212102611).

Almost surely, 2^{542602424205221} is an apocalyptic number.

It is an amenable number.

542602424205221 is a deficient number, since it is larger than the sum of its proper divisors (1).

542602424205221 is an equidigital number, since it uses as much as digits as its factorization.

542602424205221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 614400, while the sum is 41.

The spelling of 542602424205221 in words is "five hundred forty-two trillion, six hundred two billion, four hundred twenty-four million, two hundred five thousand, two hundred twenty-one".