242425128593729 has 2 divisors, whose sum is σ = 242425128593730. Its totient is φ = 242425128593728.

The previous prime is 242425128593653. The next prime is 242425128593731. The reversal of 242425128593729 is 927395821524242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 242282299776400 + 142828817329 = 15565420^2 + 377927^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242425128593729 is a prime.

It is a Sophie Germain prime.

Together with 242425128593731, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (242425128593759) 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, 121212564296864 + 121212564296865.

It is an arithmetic number, because the mean of its divisors is an integer number (121212564296865).

Almost surely, 2^{242425128593729} is an apocalyptic number.

It is an amenable number.

242425128593729 is a deficient number, since it is larger than the sum of its proper divisors (1).

242425128593729 is an equidigital number, since it uses as much as digits as its factorization.

242425128593729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 174182400, while the sum is 65.

The spelling of 242425128593729 in words is "two hundred forty-two trillion, four hundred twenty-five billion, one hundred twenty-eight million, five hundred ninety-three thousand, seven hundred twenty-nine".