242725489 has 2 divisors, whose sum is σ = 242725490. Its totient is φ = 242725488.

The previous prime is 242725481. The next prime is 242725493. The reversal of 242725489 is 984527242.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 171610000 + 71115489 = 13100^2 + 8433^2 .

It is a cyclic number.

It is not a de Polignac number, because 242725489 - 2³ = 242725481 is a prime.

It is not a weakly prime, because it can be changed into another prime (242725481) 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, 121362744 + 121362745.

It is an arithmetic number, because the mean of its divisors is an integer number (121362745).

Almost surely, 2^242725489 is an apocalyptic number.

It is an amenable number.

242725489 is a deficient number, since it is larger than the sum of its proper divisors (1).

242725489 is an equidigital number, since it uses as much as digits as its factorization.

242725489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 322560, while the sum is 43.

The square root of 242725489 is about 15579.6498356029. The cubic root of 242725489 is about 623.7900765278.

The spelling of 242725489 in words is "two hundred forty-two million, seven hundred twenty-five thousand, four hundred eighty-nine".