1226342239 has 2 divisors, whose sum is σ = 1226342240. Its totient is φ = 1226342238.

The previous prime is 1226342207. The next prime is 1226342269. The reversal of 1226342239 is 9322436221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1226342239 - 2⁵ = 1226342207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1226342269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613171119 + 613171120.

It is an arithmetic number, because the mean of its divisors is an integer number (613171120).

Almost surely, 2^1226342239 is an apocalyptic number.

1226342239 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226342239 is an equidigital number, since it uses as much as digits as its factorization.

1226342239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 34.

The square root of 1226342239 is about 35019.1695932385. The cubic root of 1226342239 is about 1070.3781349058.

The spelling of 1226342239 in words is "one billion, two hundred twenty-six million, three hundred forty-two thousand, two hundred thirty-nine".