242653500409 has 2 divisors, whose sum is σ = 242653500410. Its totient is φ = 242653500408.

The previous prime is 242653500379. The next prime is 242653500413. The reversal of 242653500409 is 904005356242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 176339525184 + 66313975225 = 419928^2 + 257515^2 .

It is a cyclic number.

It is not a de Polignac number, because 242653500409 - 2¹¹ = 242653498361 is a prime.

It is not a weakly prime, because it can be changed into another prime (242653500469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121326750204 + 121326750205.

It is an arithmetic number, because the mean of its divisors is an integer number (121326750205).

Almost surely, 2^242653500409 is an apocalyptic number.

It is an amenable number.

242653500409 is a deficient number, since it is larger than the sum of its proper divisors (1).

242653500409 is an equidigital number, since it uses as much as digits as its factorization.

242653500409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259200, while the sum is 40.

The spelling of 242653500409 in words is "two hundred forty-two billion, six hundred fifty-three million, five hundred thousand, four hundred nine".