23122042409 has 2 divisors, whose sum is σ = 23122042410. Its totient is φ = 23122042408.

The previous prime is 23122042379. The next prime is 23122042421. The reversal of 23122042409 is 90424022132.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22426560025 + 695482384 = 149755^2 + 26372^2 .

It is a cyclic number.

It is not a de Polignac number, because 23122042409 - 2²⁴ = 23105265193 is a prime.

It is not a weakly prime, because it can be changed into another prime (23122042469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11561021204 + 11561021205.

It is an arithmetic number, because the mean of its divisors is an integer number (11561021205).

Almost surely, 2^23122042409 is an apocalyptic number.

It is an amenable number.

23122042409 is a deficient number, since it is larger than the sum of its proper divisors (1).

23122042409 is an equidigital number, since it uses as much as digits as its factorization.

23122042409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 29.

The spelling of 23122042409 in words is "twenty-three billion, one hundred twenty-two million, forty-two thousand, four hundred nine".