12109841 has 8 divisors (see below), whose sum is σ = 12533160. Its totient is φ = 11691648.

The previous prime is 12109817. The next prime is 12109843. The reversal of 12109841 is 14890121.

It can be written as a sum of positive squares in 4 ways, for example, as 2989441 + 9120400 = 1729^2 + 3020^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12109841 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 12109841.

It is not an unprimeable number, because it can be changed into a prime (12109843) 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, 3875 + ... + 6263.

It is an arithmetic number, because the mean of its divisors is an integer number (1566645).

Almost surely, 2^12109841 is an apocalyptic number.

It is an amenable number.

12109841 is a deficient number, since it is larger than the sum of its proper divisors (423319).

12109841 is a wasteful number, since it uses less digits than its factorization.

12109841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2563.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 12109841 is about 3479.9196829812. The cubic root of 12109841 is about 229.6392643800.

Adding to 12109841 its reverse (14890121), we get a palindrome (26999962).

The spelling of 12109841 in words is "twelve million, one hundred nine thousand, eight hundred forty-one".