104240209 has 8 divisors (see below), whose sum is σ = 115171200. Its totient is φ = 93842496.

The previous prime is 104240207. The next prime is 104240221. The reversal of 104240209 is 902042401.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 104240209 - 2¹ = 104240207 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 104240209.

It is not an unprimeable number, because it can be changed into a prime (104240207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132909 + ... + 133690.

It is an arithmetic number, because the mean of its divisors is an integer number (14396400).

Almost surely, 2^104240209 is an apocalyptic number.

It is an amenable number.

104240209 is a deficient number, since it is larger than the sum of its proper divisors (10930991).

104240209 is a wasteful number, since it uses less digits than its factorization.

104240209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266639.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 104240209 is about 10209.8094497400. The cubic root of 104240209 is about 470.6287179686.

The spelling of 104240209 in words is "one hundred four million, two hundred forty thousand, two hundred nine".