12309043 has 4 divisors (see below), whose sum is σ = 12422080. Its totient is φ = 12196008.

The previous prime is 12309029. The next prime is 12309053. The reversal of 12309043 is 34090321.

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 12309043 - 2²¹ = 10211891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12309013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56355 + ... + 56572.

It is an arithmetic number, because the mean of its divisors is an integer number (3105520).

Almost surely, 2^12309043 is an apocalyptic number.

12309043 is a deficient number, since it is larger than the sum of its proper divisors (113037).

12309043 is a wasteful number, since it uses less digits than its factorization.

12309043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113036.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 12309043 is about 3508.4245752189. The cubic root of 12309043 is about 230.8915803376.

Adding to 12309043 its reverse (34090321), we get a palindrome (46399364).

The spelling of 12309043 in words is "twelve million, three hundred nine thousand, forty-three".