124212009 has 16 divisors (see below), whose sum is σ = 172224000. Its totient is φ = 79543680.

The previous prime is 124211999. The next prime is 124212041. The reversal of 124212009 is 900212421.

It is not a de Polignac number, because 124212009 - 2⁹ = 124211497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (124219009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7867 + ... + 17615.

It is an arithmetic number, because the mean of its divisors is an integer number (10764000).

Almost surely, 2^124212009 is an apocalyptic number.

It is an amenable number.

124212009 is a deficient number, since it is larger than the sum of its proper divisors (48011991).

124212009 is a wasteful number, since it uses less digits than its factorization.

124212009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9920.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 124212009 is about 11145.0441452692. The cubic root of 124212009 is about 498.9471298183.

The spelling of 124212009 in words is "one hundred twenty-four million, two hundred twelve thousand, nine".