242635646243 has 2 divisors, whose sum is σ = 242635646244. Its totient is φ = 242635646242.

The previous prime is 242635646189. The next prime is 242635646291. The reversal of 242635646243 is 342646536242.

242635646243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 242635646243 - 2¹⁸ = 242635384099 is a prime.

It is not a weakly prime, because it can be changed into another prime (242635646843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121317823121 + 121317823122.

It is an arithmetic number, because the mean of its divisors is an integer number (121317823122).

Almost surely, 2^242635646243 is an apocalyptic number.

242635646243 is a deficient number, since it is larger than the sum of its proper divisors (1).

242635646243 is an equidigital number, since it uses as much as digits as its factorization.

242635646243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4976640, while the sum is 47.

The spelling of 242635646243 in words is "two hundred forty-two billion, six hundred thirty-five million, six hundred forty-six thousand, two hundred forty-three".