12405043 has 12 divisors (see below), whose sum is σ = 14965680. Its totient is φ = 10071216.

The previous prime is 12405031. The next prime is 12405067. The reversal of 12405043 is 34050421.

It is not a de Polignac number, because 12405043 - 2⁹ = 12404531 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

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 12405043.

It is not an unprimeable number, because it can be changed into a prime (12405013) 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 11 ways as a sum of consecutive naturals, for example, 73 + ... + 4981.

It is an arithmetic number, because the mean of its divisors is an integer number (1247140).

Almost surely, 2^12405043 is an apocalyptic number.

12405043 is a deficient number, since it is larger than the sum of its proper divisors (2560637).

12405043 is an equidigital number, since it uses as much as digits as its factorization.

12405043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4954 (or 4935 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 12405043 is about 3522.0793574251. The cubic root of 12405043 is about 231.4902788144.

Adding to 12405043 its reverse (34050421), we get a palindrome (46455464).

The spelling of 12405043 in words is "twelve million, four hundred five thousand, forty-three".