124412009 has 2 divisors, whose sum is σ = 124412010. Its totient is φ = 124412008.

The previous prime is 124411997. The next prime is 124412011. The reversal of 124412009 is 900214421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113209600 + 11202409 = 10640^2 + 3347^2 .

It is a cyclic number.

It is not a de Polignac number, because 124412009 - 2¹⁶ = 124346473 is a prime.

Together with 124412011, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (124418009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62206004 + 62206005.

It is an arithmetic number, because the mean of its divisors is an integer number (62206005).

Almost surely, 2^124412009 is an apocalyptic number.

It is an amenable number.

124412009 is a deficient number, since it is larger than the sum of its proper divisors (1).

124412009 is an equidigital number, since it uses as much as digits as its factorization.

124412009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 124412009 is about 11154.0131342939. The cubic root of 124412009 is about 499.2147795031.

The spelling of 124412009 in words is "one hundred twenty-four million, four hundred twelve thousand, nine".