242226289 has 2 divisors, whose sum is σ = 242226290. Its totient is φ = 242226288.

The previous prime is 242226277. The next prime is 242226349. The reversal of 242226289 is 982622242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 233845264 + 8381025 = 15292^2 + 2895^2 .

It is a cyclic number.

It is not a de Polignac number, because 242226289 - 2²¹ = 240129137 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (242226389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121113144 + 121113145.

It is an arithmetic number, because the mean of its divisors is an integer number (121113145).

Almost surely, 2^242226289 is an apocalyptic number.

It is an amenable number.

242226289 is a deficient number, since it is larger than the sum of its proper divisors (1).

242226289 is an equidigital number, since it uses as much as digits as its factorization.

242226289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 37.

The square root of 242226289 is about 15563.6206905720. The cubic root of 242226289 is about 623.3621449184.

The spelling of 242226289 in words is "two hundred forty-two million, two hundred twenty-six thousand, two hundred eighty-nine".