104121009 has 12 divisors (see below), whose sum is σ = 150832500. Its totient is φ = 69213024.

The previous prime is 104120983. The next prime is 104121013. The reversal of 104121009 is 900121401.

It can be written as a sum of positive squares in 2 ways, for example, as 95121009 + 9000000 = 9753^2 + 3000^2 .

It is not a de Polignac number, because 104121009 - 2¹² = 104116913 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 104120982 and 104121000.

It is not an unprimeable number, because it can be changed into a prime (104121019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13434 + ... + 19715.

It is an arithmetic number, because the mean of its divisors is an integer number (12569375).

Almost surely, 2^104121009 is an apocalyptic number.

It is an amenable number.

104121009 is a deficient number, since it is larger than the sum of its proper divisors (46711491).

104121009 is a wasteful number, since it uses less digits than its factorization.

104121009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33504 (or 33501 counting only the distinct ones).

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

The square root of 104121009 is about 10203.9702567187. The cubic root of 104121009 is about 470.4492595792.

The spelling of 104121009 in words is "one hundred four million, one hundred twenty-one thousand, nine".