242943861709 has 2 divisors, whose sum is σ = 242943861710. Its totient is φ = 242943861708.

The previous prime is 242943861649. The next prime is 242943861739. The reversal of 242943861709 is 907168349242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 240914088900 + 2029772809 = 490830^2 + 45053^2 .

It is a cyclic number.

It is not a de Polignac number, because 242943861709 - 2¹⁷ = 242943730637 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 242943861709.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242943861739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121471930854 + 121471930855.

It is an arithmetic number, because the mean of its divisors is an integer number (121471930855).

Almost surely, 2^242943861709 is an apocalyptic number.

It is an amenable number.

242943861709 is a deficient number, since it is larger than the sum of its proper divisors (1).

242943861709 is an equidigital number, since it uses as much as digits as its factorization.

242943861709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5225472, while the sum is 55.

The spelling of 242943861709 in words is "two hundred forty-two billion, nine hundred forty-three million, eight hundred sixty-one thousand, seven hundred nine".