242635254397 has 2 divisors, whose sum is σ = 242635254398. Its totient is φ = 242635254396.

The previous prime is 242635254373. The next prime is 242635254443. The reversal of 242635254397 is 793452536242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 203521885956 + 39113368441 = 451134^2 + 197771^2 .

It is a cyclic number.

It is not a de Polignac number, because 242635254397 - 2⁷ = 242635254269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242635254997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121317627198 + 121317627199.

It is an arithmetic number, because the mean of its divisors is an integer number (121317627199).

Almost surely, 2^242635254397 is an apocalyptic number.

It is an amenable number.

242635254397 is a deficient number, since it is larger than the sum of its proper divisors (1).

242635254397 is an equidigital number, since it uses as much as digits as its factorization.

242635254397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10886400, while the sum is 52.

The spelling of 242635254397 in words is "two hundred forty-two billion, six hundred thirty-five million, two hundred fifty-four thousand, three hundred ninety-seven".