1122742609 has 2 divisors, whose sum is σ = 1122742610. Its totient is φ = 1122742608.

The previous prime is 1122742601. The next prime is 1122742711. The reversal of 1122742609 is 9062472211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1122451009 + 291600 = 33503^2 + 540^2 .

It is a cyclic number.

It is not a de Polignac number, because 1122742609 - 2³ = 1122742601 is a prime.

It is not a weakly prime, because it can be changed into another prime (1122742601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561371304 + 561371305.

It is an arithmetic number, because the mean of its divisors is an integer number (561371305).

Almost surely, 2^1122742609 is an apocalyptic number.

It is an amenable number.

1122742609 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122742609 is an equidigital number, since it uses as much as digits as its factorization.

1122742609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 1122742609 is about 33507.3515664846. The cubic root of 1122742609 is about 1039.3458068348.

The spelling of 1122742609 in words is "one billion, one hundred twenty-two million, seven hundred forty-two thousand, six hundred nine".