12005841 has 4 divisors (see below), whose sum is σ = 16007792. Its totient is φ = 8003892.

The previous prime is 12005831. The next prime is 12005843. The reversal of 12005841 is 14850021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12005841 - 2¹³ = 11997649 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12005843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2000971 + ... + 2000976.

It is an arithmetic number, because the mean of its divisors is an integer number (4001948).

Almost surely, 2^12005841 is an apocalyptic number.

It is an amenable number.

12005841 is a deficient number, since it is larger than the sum of its proper divisors (4001951).

12005841 is an equidigital number, since it uses as much as digits as its factorization.

12005841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4001950.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 12005841 is about 3464.9445883015. The cubic root of 12005841 is about 228.9799884625.

Adding to 12005841 its reverse (14850021), we get a palindrome (26855862).

The spelling of 12005841 in words is "twelve million, five thousand, eight hundred forty-one".