12765143 has 2 divisors, whose sum is σ = 12765144. Its totient is φ = 12765142.

The previous prime is 12765139. The next prime is 12765157. The reversal of 12765143 is 34156721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12765143 - 2² = 12765139 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12765163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6382571 + 6382572.

It is an arithmetic number, because the mean of its divisors is an integer number (6382572).

Almost surely, 2^12765143 is an apocalyptic number.

12765143 is a deficient number, since it is larger than the sum of its proper divisors (1).

12765143 is an equidigital number, since it uses as much as digits as its factorization.

12765143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 29.

The square root of 12765143 is about 3572.8340291707. The cubic root of 12765143 is about 233.7088875048.

The spelling of 12765143 in words is "twelve million, seven hundred sixty-five thousand, one hundred forty-three".