12456971 has 8 divisors (see below), whose sum is σ = 13497264. Its totient is φ = 11450880.

The previous prime is 12456943. The next prime is 12456991. The reversal of 12456971 is 17965421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12456971 is a prime.

It is a super-2 number, since 2×12456971² = 310352252989682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12456911) 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 7 ways as a sum of consecutive naturals, for example, 7790 + ... + 9251.

It is an arithmetic number, because the mean of its divisors is an integer number (1687158).

Almost surely, 2^12456971 is an apocalyptic number.

12456971 is a deficient number, since it is larger than the sum of its proper divisors (1040293).

12456971 is a wasteful number, since it uses less digits than its factorization.

12456971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17101.

The product of its digits is 15120, while the sum is 35.

The square root of 12456971 is about 3529.4434405441. The cubic root of 12456971 is about 231.8128383003.

The spelling of 12456971 in words is "twelve million, four hundred fifty-six thousand, nine hundred seventy-one".