123246009 has 8 divisors (see below), whose sum is σ = 182586720. Its totient is φ = 82163988.

The previous prime is 123245981. The next prime is 123246017. The reversal of 123246009 is 900642321.

It is not a de Polignac number, because 123246009 - 2⁹ = 123245497 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 4564667 = 123246009 / (1 + 2 + 3 + 2 + 4 + 6 + 0 + 0 + 9).

It is not an unprimeable number, because it can be changed into a prime (123246059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2282307 + ... + 2282360.

It is an arithmetic number, because the mean of its divisors is an integer number (22823340).

Almost surely, 2^123246009 is an apocalyptic number.

It is an amenable number.

123246009 is a deficient number, since it is larger than the sum of its proper divisors (59340711).

123246009 is an equidigital number, since it uses as much as digits as its factorization.

123246009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4564676 (or 4564670 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 123246009 is about 11101.6219085321. The cubic root of 123246009 is about 497.6503206439.

The spelling of 123246009 in words is "one hundred twenty-three million, two hundred forty-six thousand, nine".