104101209 has 27 divisors (see below), whose sum is σ = 159590613. Its totient is φ = 65380824.

The previous prime is 104101201. The next prime is 104101219. The reversal of 104101209 is 902101401.

The square root of 104101209 is 10203.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 104101209 - 2³ = 104101201 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 104101191 and 104101200.

It is not an unprimeable number, because it can be changed into a prime (104101201) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 581482 + ... + 581660.

Almost surely, 2^104101209 is an apocalyptic number.

104101209 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

104101209 is the 10203-rd square number.

104101209 is the 5102-nd centered octagonal number.

It is an amenable number.

104101209 is a deficient number, since it is larger than the sum of its proper divisors (55489404).

104101209 is an equidigital number, since it uses as much as digits as its factorization.

104101209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402 (or 201 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The cubic root of 104101209 is about 470.4194369528.

The spelling of 104101209 in words is "one hundred four million, one hundred one thousand, two hundred nine".