12320043 has 4 divisors (see below), whose sum is σ = 16426728. Its totient is φ = 8213360.

The previous prime is 12320023. The next prime is 12320047. The reversal of 12320043 is 34002321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12320043 - 2⁸ = 12319787 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12320047) 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 3 ways as a sum of consecutive naturals, for example, 2053338 + ... + 2053343.

It is an arithmetic number, because the mean of its divisors is an integer number (4106682).

Almost surely, 2^12320043 is an apocalyptic number.

12320043 is a deficient number, since it is larger than the sum of its proper divisors (4106685).

12320043 is an equidigital number, since it uses as much as digits as its factorization.

12320043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4106684.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 12320043 is about 3509.9918803325. The cubic root of 12320043 is about 230.9603387615.

Adding to 12320043 its reverse (34002321), we get a palindrome (46322364).

The spelling of 12320043 in words is "twelve million, three hundred twenty thousand, forty-three".