12917043 has 16 divisors (see below), whose sum is σ = 19292160. Its totient is φ = 8541288.

The previous prime is 12917039. The next prime is 12917063. The reversal of 12917043 is 34071921.

It is not a de Polignac number, because 12917043 - 2² = 12917039 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 12916998 and 12917016.

It is not an unprimeable number, because it can be changed into a prime (12917063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1546 + ... + 5312.

It is an arithmetic number, because the mean of its divisors is an integer number (1205760).

Almost surely, 2^12917043 is an apocalyptic number.

12917043 is a deficient number, since it is larger than the sum of its proper divisors (6375117).

12917043 is a wasteful number, since it uses less digits than its factorization.

12917043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3903 (or 3897 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 12917043 is about 3594.0287978813. The cubic root of 12917043 is about 234.6322481033.

Adding to 12917043 its reverse (34071921), we get a palindrome (46988964).

The spelling of 12917043 in words is "twelve million, nine hundred seventeen thousand, forty-three".