12345071 has 2 divisors, whose sum is σ = 12345072. Its totient is φ = 12345070.

The previous prime is 12345049. The next prime is 12345083. The reversal of 12345071 is 17054321.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12345071 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12345001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6172535 + 6172536.

It is an arithmetic number, because the mean of its divisors is an integer number (6172536).

Almost surely, 2^12345071 is an apocalyptic number.

12345071 is a deficient number, since it is larger than the sum of its proper divisors (1).

12345071 is an equidigital number, since it uses as much as digits as its factorization.

12345071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 12345071 is about 3513.5553218926. Note that the first 3 decimals coincide. The cubic root of 12345071 is about 231.1166305713.

Adding to 12345071 its reverse (17054321), we get a palindrome (29399392).

The spelling of 12345071 in words is "twelve million, three hundred forty-five thousand, seventy-one".