242032309 has 2 divisors, whose sum is σ = 242032310. Its totient is φ = 242032308.

The previous prime is 242032237. The next prime is 242032319. The reversal of 242032309 is 903230242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 238609809 + 3422500 = 15447^2 + 1850^2 .

It is a cyclic number.

It is not a de Polignac number, because 242032309 - 2¹⁷ = 241901237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242032319) 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, 121016154 + 121016155.

It is an arithmetic number, because the mean of its divisors is an integer number (121016155).

Almost surely, 2^242032309 is an apocalyptic number.

It is an amenable number.

242032309 is a deficient number, since it is larger than the sum of its proper divisors (1).

242032309 is an equidigital number, since it uses as much as digits as its factorization.

242032309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 242032309 is about 15557.3876020365. The cubic root of 242032309 is about 623.1956998942.

The spelling of 242032309 in words is "two hundred forty-two million, thirty-two thousand, three hundred nine".