124223009 has 2 divisors, whose sum is σ = 124223010. Its totient is φ = 124223008.

The previous prime is 124223003. The next prime is 124223017. The reversal of 124223009 is 900322421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123832384 + 390625 = 11128^2 + 625^2 .

It is an emirp because it is prime and its reverse (900322421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 124223009 - 2⁴ = 124222993 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (124223003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62111504 + 62111505.

It is an arithmetic number, because the mean of its divisors is an integer number (62111505).

Almost surely, 2^124223009 is an apocalyptic number.

It is an amenable number.

124223009 is a deficient number, since it is larger than the sum of its proper divisors (1).

124223009 is an equidigital number, since it uses as much as digits as its factorization.

124223009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 124223009 is about 11145.5376272300. The cubic root of 124223009 is about 498.9618580142.

The spelling of 124223009 in words is "one hundred twenty-four million, two hundred twenty-three thousand, nine".