12890043 has 8 divisors (see below), whose sum is σ = 19096400. Its totient is φ = 8593344.

The previous prime is 12890027. The next prime is 12890047. The reversal of 12890043 is 34009821.

It is not a de Polignac number, because 12890043 - 2⁴ = 12890027 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 477409 = 12890043 / (1 + 2 + 8 + 9 + 0 + 0 + 4 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12889989 and 12890016.

It is not an unprimeable number, because it can be changed into a prime (12890047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238678 + ... + 238731.

It is an arithmetic number, because the mean of its divisors is an integer number (2387050).

Almost surely, 2^12890043 is an apocalyptic number.

12890043 is a deficient number, since it is larger than the sum of its proper divisors (6206357).

12890043 is an equidigital number, since it uses as much as digits as its factorization.

12890043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477418 (or 477412 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 12890043 is about 3590.2706026148. The cubic root of 12890043 is about 234.4686531325.

Adding to 12890043 its reverse (34009821), we get a palindrome (46899864).

The spelling of 12890043 in words is "twelve million, eight hundred ninety thousand, forty-three".