242226709 has 2 divisors, whose sum is σ = 242226710. Its totient is φ = 242226708.

The previous prime is 242226703. The next prime is 242226737. The reversal of 242226709 is 907622242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 204404209 + 37822500 = 14297^2 + 6150^2 .

It is a cyclic number.

It is not a de Polignac number, because 242226709 - 2²¹ = 240129557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242226703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121113354 + 121113355.

It is an arithmetic number, because the mean of its divisors is an integer number (121113355).

Almost surely, 2^242226709 is an apocalyptic number.

It is an amenable number.

242226709 is a deficient number, since it is larger than the sum of its proper divisors (1).

242226709 is an equidigital number, since it uses as much as digits as its factorization.

242226709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 242226709 is about 15563.6341835704. The cubic root of 242226709 is about 623.3625052041.

The spelling of 242226709 in words is "two hundred forty-two million, two hundred twenty-six thousand, seven hundred nine".