12001443 has 12 divisors (see below), whose sum is σ = 16232328. Its totient is φ = 7887360.

The previous prime is 12001427. The next prime is 12001453. The reversal of 12001443 is 34410021.

It is not a de Polignac number, because 12001443 - 2⁴ = 12001427 is a prime.

12001443 is a modest number, since divided by 1443 gives 12 as remainder.

It is not an unprimeable number, because it can be changed into a prime (12001453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18403 + ... + 19043.

It is an arithmetic number, because the mean of its divisors is an integer number (1352694).

Almost surely, 2^12001443 is an apocalyptic number.

12001443 is a deficient number, since it is larger than the sum of its proper divisors (4230885).

12001443 is an frugal number, since it uses more digits than its factorization.

12001443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802 (or 723 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 12001443 is about 3464.3098879864. The cubic root of 12001443 is about 228.9520249354.

Adding to 12001443 its reverse (34410021), we get a palindrome (46411464).

The spelling of 12001443 in words is "twelve million, one thousand, four hundred forty-three".