242721189467203 has 2 divisors, whose sum is σ = 242721189467204. Its totient is φ = 242721189467202.

The previous prime is 242721189467191. The next prime is 242721189467227. The reversal of 242721189467203 is 302764981127242.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 242721189467203 - 2⁴¹ = 240522166211651 is a prime.

It is not a weakly prime, because it can be changed into another prime (242721189467243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121360594733601 + 121360594733602.

It is an arithmetic number, because the mean of its divisors is an integer number (121360594733602).

Almost surely, 2^{242721189467203} is an apocalyptic number.

242721189467203 is a deficient number, since it is larger than the sum of its proper divisors (1).

242721189467203 is an equidigital number, since it uses as much as digits as its factorization.

242721189467203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16257024, while the sum is 58.

The spelling of 242721189467203 in words is "two hundred forty-two trillion, seven hundred twenty-one billion, one hundred eighty-nine million, four hundred sixty-seven thousand, two hundred three".