242907649 has 2 divisors, whose sum is σ = 242907650. Its totient is φ = 242907648.

The previous prime is 242907617. The next prime is 242907659. The reversal of 242907649 is 946709242.

242907649 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 can be written as a sum of positive squares in only one way, i.e., 180418624 + 62489025 = 13432^2 + 7905^2 .

It is a cyclic number.

It is not a de Polignac number, because 242907649 - 2⁵ = 242907617 is a prime.

It is not a weakly prime, because it can be changed into another prime (242907659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121453824 + 121453825.

It is an arithmetic number, because the mean of its divisors is an integer number (121453825).

Almost surely, 2^242907649 is an apocalyptic number.

It is an amenable number.

242907649 is a deficient number, since it is larger than the sum of its proper divisors (1).

242907649 is an equidigital number, since it uses as much as digits as its factorization.

242907649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 242907649 is about 15585.4948269216. The cubic root of 242907649 is about 623.9460842976.

The spelling of 242907649 in words is "two hundred forty-two million, nine hundred seven thousand, six hundred forty-nine".