12730043 has 4 divisors (see below), whose sum is σ = 13169040. Its totient is φ = 12291048.

The previous prime is 12730033. The next prime is 12730051. The reversal of 12730043 is 34003721.

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 12730043 - 2⁴ = 12730027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12729997 and 12730024.

It is not an unprimeable number, because it can be changed into a prime (12730013) 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, 219455 + ... + 219512.

It is an arithmetic number, because the mean of its divisors is an integer number (3292260).

Almost surely, 2^12730043 is an apocalyptic number.

12730043 is a deficient number, since it is larger than the sum of its proper divisors (438997).

12730043 is an equidigital number, since it uses as much as digits as its factorization.

12730043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438996.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 12730043 is about 3567.9185809096. The cubic root of 12730043 is about 233.4944830088.

Adding to 12730043 its reverse (34003721), we get a palindrome (46733764).

The spelling of 12730043 in words is "twelve million, seven hundred thirty thousand, forty-three".