242960281 has 2 divisors, whose sum is σ = 242960282. Its totient is φ = 242960280.

The previous prime is 242960233. The next prime is 242960309. The reversal of 242960281 is 182069242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 242861056 + 99225 = 15584^2 + 315^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242960281 is a prime.

It is a super-2 number, since 2×242960281² = 118059396287197922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (242960881) 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, 121480140 + 121480141.

It is an arithmetic number, because the mean of its divisors is an integer number (121480141).

Almost surely, 2^242960281 is an apocalyptic number.

It is an amenable number.

242960281 is a deficient number, since it is larger than the sum of its proper divisors (1).

242960281 is an equidigital number, since it uses as much as digits as its factorization.

242960281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 242960281 is about 15587.1832285375. The cubic root of 242960281 is about 623.9911455365.

The spelling of 242960281 in words is "two hundred forty-two million, nine hundred sixty thousand, two hundred eighty-one".