11142342209 has 2 divisors, whose sum is σ = 11142342210. Its totient is φ = 11142342208.

The previous prime is 11142342193. The next prime is 11142342241. The reversal of 11142342209 is 90224324111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8900035600 + 2242306609 = 94340^2 + 47353^2 .

It is a cyclic number.

It is not a de Polignac number, because 11142342209 - 2⁴ = 11142342193 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (11142342259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5571171104 + 5571171105.

It is an arithmetic number, because the mean of its divisors is an integer number (5571171105).

Almost surely, 2^11142342209 is an apocalyptic number.

It is an amenable number.

11142342209 is a deficient number, since it is larger than the sum of its proper divisors (1).

11142342209 is an equidigital number, since it uses as much as digits as its factorization.

11142342209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The spelling of 11142342209 in words is "eleven billion, one hundred forty-two million, three hundred forty-two thousand, two hundred nine".