12040443 has 12 divisors (see below), whose sum is σ = 17482608. Its totient is φ = 7985040.

The previous prime is 12040421. The next prime is 12040463. The reversal of 12040443 is 34404021.

It is not a de Polignac number, because 12040443 - 2¹² = 12036347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12040463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1623 + ... + 5168.

It is an arithmetic number, because the mean of its divisors is an integer number (1456884).

Almost surely, 2^12040443 is an apocalyptic number.

12040443 is a deficient number, since it is larger than the sum of its proper divisors (5442165).

12040443 is a wasteful number, since it uses less digits than its factorization.

12040443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6994 (or 6991 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 12040443 is about 3469.9341492311. The cubic root of 12040443 is about 229.1997583214.

Adding to 12040443 its reverse (34404021), we get a palindrome (46444464).

The spelling of 12040443 in words is "twelve million, forty thousand, four hundred forty-three".