124013009 has 2 divisors, whose sum is σ = 124013010. Its totient is φ = 124013008.

The previous prime is 124013003. The next prime is 124013017. The reversal of 124013009 is 900310421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123832384 + 180625 = 11128^2 + 425^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124013009 is a prime.

It is not a weakly prime, because it can be changed into another prime (124013003) 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, 62006504 + 62006505.

It is an arithmetic number, because the mean of its divisors is an integer number (62006505).

Almost surely, 2^124013009 is an apocalyptic number.

It is an amenable number.

124013009 is a deficient number, since it is larger than the sum of its proper divisors (1).

124013009 is an equidigital number, since it uses as much as digits as its factorization.

124013009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 124013009 is about 11136.1128316841. The cubic root of 124013009 is about 498.6805330770.

The spelling of 124013009 in words is "one hundred twenty-four million, thirteen thousand, nine".