12456071 has 2 divisors, whose sum is σ = 12456072. Its totient is φ = 12456070.

The previous prime is 12456049. The next prime is 12456097. The reversal of 12456071 is 17065421.

It is an a-pointer prime, because the next prime (12456097) can be obtained adding 12456071 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12456071 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12456071.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12456011) 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 as a sum of consecutive naturals, namely, 6228035 + 6228036.

It is an arithmetic number, because the mean of its divisors is an integer number (6228036).

Almost surely, 2^12456071 is an apocalyptic number.

12456071 is a deficient number, since it is larger than the sum of its proper divisors (1).

12456071 is an equidigital number, since it uses as much as digits as its factorization.

12456071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 12456071 is about 3529.3159393854. The cubic root of 12456071 is about 231.8072554402.

The spelling of 12456071 in words is "twelve million, four hundred fifty-six thousand, seventy-one".