242120269 has 2 divisors, whose sum is σ = 242120270. Its totient is φ = 242120268.

The previous prime is 242120209. The next prime is 242120279. The reversal of 242120269 is 962021242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 205578244 + 36542025 = 14338^2 + 6045^2 .

It is a cyclic number.

It is not a de Polignac number, because 242120269 - 2⁷ = 242120141 is a prime.

It is a super-2 number, since 2×242120269² = 117244449321264722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242120209) 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, 121060134 + 121060135.

It is an arithmetic number, because the mean of its divisors is an integer number (121060135).

Almost surely, 2^242120269 is an apocalyptic number.

It is an amenable number.

242120269 is a deficient number, since it is larger than the sum of its proper divisors (1).

242120269 is an equidigital number, since it uses as much as digits as its factorization.

242120269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 242120269 is about 15560.2142980102. The cubic root of 242120269 is about 623.2711852083.

The spelling of 242120269 in words is "two hundred forty-two million, one hundred twenty thousand, two hundred sixty-nine".