124208209 has 12 divisors (see below), whose sum is σ = 128838864. Its totient is φ = 119677824.

The previous prime is 124208191. The next prime is 124208219. The reversal of 124208209 is 902802421.

It is not a de Polignac number, because 124208209 - 2⁵ = 124208177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124208219) 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 in 11 ways as a sum of consecutive naturals, for example, 404434 + ... + 404740.

It is an arithmetic number, because the mean of its divisors is an integer number (10736572).

Almost surely, 2^124208209 is an apocalyptic number.

It is an amenable number.

124208209 is a deficient number, since it is larger than the sum of its proper divisors (4630655).

124208209 is an frugal number, since it uses more digits than its factorization.

124208209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544 (or 447 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 124208209 is about 11144.8736646047. The cubic root of 124208209 is about 498.9420416940.

The spelling of 124208209 in words is "one hundred twenty-four million, two hundred eight thousand, two hundred nine".