12005842 has 16 divisors (see below), whose sum is σ = 19153152. Its totient is φ = 5624640.

The previous prime is 12005831. The next prime is 12005843. The reversal of 12005842 is 24850021.

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 7 ways as a sum of consecutive naturals, for example, 8563 + ... + 9865.

It is an arithmetic number, because the mean of its divisors is an integer number (1197072).

Almost surely, 2^12005842 is an apocalyptic number.

12005842 is a deficient number, since it is larger than the sum of its proper divisors (7147310).

12005842 is a wasteful number, since it uses less digits than its factorization.

12005842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1593.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 12005842 is about 3464.9447326040. The cubic root of 12005842 is about 228.9799948200.

Adding to 12005842 its reverse (24850021), we get a palindrome (36855863).

The spelling of 12005842 in words is "twelve million, five thousand, eight hundred forty-two".