542399900191 has 2 divisors, whose sum is σ = 542399900192. Its totient is φ = 542399900190.

The previous prime is 542399900113. The next prime is 542399900197. The reversal of 542399900191 is 191009993245.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 542399900191 - 2²¹ = 542397803039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542399900197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271199950095 + 271199950096.

It is an arithmetic number, because the mean of its divisors is an integer number (271199950096).

Almost surely, 2^542399900191 is an apocalyptic number.

542399900191 is a deficient number, since it is larger than the sum of its proper divisors (1).

542399900191 is an equidigital number, since it uses as much as digits as its factorization.

542399900191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 787320, while the sum is 52.

The spelling of 542399900191 in words is "five hundred forty-two billion, three hundred ninety-nine million, nine hundred thousand, one hundred ninety-one".