242447243 has 2 divisors, whose sum is σ = 242447244. Its totient is φ = 242447242.

The previous prime is 242447143. The next prime is 242447299. The reversal of 242447243 is 342744242.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 242447243 - 2⁸ = 242446987 is a prime.

It is not a weakly prime, because it can be changed into another prime (242447143) 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, 121223621 + 121223622.

It is an arithmetic number, because the mean of its divisors is an integer number (121223622).

Almost surely, 2^242447243 is an apocalyptic number.

242447243 is a deficient number, since it is larger than the sum of its proper divisors (1).

242447243 is an equidigital number, since it uses as much as digits as its factorization.

242447243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43008, while the sum is 32.

The square root of 242447243 is about 15570.7174850743. The cubic root of 242447243 is about 623.5516268303.

The spelling of 242447243 in words is "two hundred forty-two million, four hundred forty-seven thousand, two hundred forty-three".