12507971 has 16 divisors (see below), whose sum is σ = 15318720. Its totient is φ = 9968640.

The previous prime is 12507959. The next prime is 12507977. The reversal of 12507971 is 17970521.

It is a cyclic number.

It is not a de Polignac number, because 12507971 - 2⁶ = 12507907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12507977) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10001 + ... + 11181.

It is an arithmetic number, because the mean of its divisors is an integer number (957420).

Almost surely, 2^12507971 is an apocalyptic number.

12507971 is a deficient number, since it is larger than the sum of its proper divisors (2810749).

12507971 is a wasteful number, since it uses less digits than its factorization.

12507971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294.

The product of its (nonzero) digits is 4410, while the sum is 32.

The square root of 12507971 is about 3536.6609959113. The cubic root of 12507971 is about 232.1287620047.

The spelling of 12507971 in words is "twelve million, five hundred seven thousand, nine hundred seventy-one".