242256761 has 2 divisors, whose sum is σ = 242256762. Its totient is φ = 242256760.

The previous prime is 242256743. The next prime is 242256767. The reversal of 242256761 is 167652242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 170955625 + 71301136 = 13075^2 + 8444^2 .

It is a cyclic number.

It is not a de Polignac number, because 242256761 - 2⁶ = 242256697 is a prime.

It is a super-2 number, since 2×242256761² = 117376676500422242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (242256767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121128380 + 121128381.

It is an arithmetic number, because the mean of its divisors is an integer number (121128381).

Almost surely, 2^242256761 is an apocalyptic number.

It is an amenable number.

242256761 is a deficient number, since it is larger than the sum of its proper divisors (1).

242256761 is an equidigital number, since it uses as much as digits as its factorization.

242256761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 35.

The square root of 242256761 is about 15564.5996093700. The cubic root of 242256761 is about 623.3882834174.

The spelling of 242256761 in words is "two hundred forty-two million, two hundred fifty-six thousand, seven hundred sixty-one".