124030809 has 18 divisors (see below), whose sum is σ = 208406250. Its totient is φ = 70874496.

The previous prime is 124030807. The next prime is 124030831. The reversal of 124030809 is 908030421.

It can be written as a sum of positive squares in only one way, i.e., 73051209 + 50979600 = 8547^2 + 7140^2 .

It is not a de Polignac number, because 124030809 - 2¹ = 124030807 is a prime.

It is not an unprimeable number, because it can be changed into a prime (124030807) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 140184 + ... + 141065.

It is an arithmetic number, because the mean of its divisors is an integer number (11578125).

Almost surely, 2^124030809 is an apocalyptic number.

It is an amenable number.

124030809 is a deficient number, since it is larger than the sum of its proper divisors (84375441).

124030809 is a wasteful number, since it uses less digits than its factorization.

124030809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281269 (or 281259 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 124030809 is about 11136.9120046807. The cubic root of 124030809 is about 498.7043910279.

The spelling of 124030809 in words is "one hundred twenty-four million, thirty thousand, eight hundred nine".