242703289 has 2 divisors, whose sum is σ = 242703290. Its totient is φ = 242703288.

The previous prime is 242703277. The next prime is 242703299. The reversal of 242703289 is 982307242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 240498064 + 2205225 = 15508^2 + 1485^2 .

It is a cyclic number.

It is not a de Polignac number, because 242703289 - 2⁹ = 242702777 is a prime.

It is not a weakly prime, because it can be changed into another prime (242703259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121351644 + 121351645.

It is an arithmetic number, because the mean of its divisors is an integer number (121351645).

Almost surely, 2^242703289 is an apocalyptic number.

It is an amenable number.

242703289 is a deficient number, since it is larger than the sum of its proper divisors (1).

242703289 is an equidigital number, since it uses as much as digits as its factorization.

242703289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 242703289 is about 15578.9373514370. The cubic root of 242703289 is about 623.7710583879.

The spelling of 242703289 in words is "two hundred forty-two million, seven hundred three thousand, two hundred eighty-nine".