242497879993 has 2 divisors, whose sum is σ = 242497879994. Its totient is φ = 242497879992.

The previous prime is 242497879961. The next prime is 242497880071. The reversal of 242497879993 is 399978794242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 168811691689 + 73686188304 = 410867^2 + 271452^2 .

It is a cyclic number.

It is not a de Polignac number, because 242497879993 - 2⁵ = 242497879961 is a prime.

It is not a weakly prime, because it can be changed into another prime (242497879933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121248939996 + 121248939997.

It is an arithmetic number, because the mean of its divisors is an integer number (121248939997).

Almost surely, 2^242497879993 is an apocalyptic number.

It is an amenable number.

242497879993 is a deficient number, since it is larger than the sum of its proper divisors (1).

242497879993 is an equidigital number, since it uses as much as digits as its factorization.

242497879993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 493807104, while the sum is 73.

The spelling of 242497879993 in words is "two hundred forty-two billion, four hundred ninety-seven million, eight hundred seventy-nine thousand, nine hundred ninety-three".