12145843 has 2 divisors, whose sum is σ = 12145844. Its totient is φ = 12145842.

The previous prime is 12145829. The next prime is 12145849. The reversal of 12145843 is 34854121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12145843 - 2¹³ = 12137651 is a prime.

It is not a weakly prime, because it can be changed into another prime (12145849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6072921 + 6072922.

It is an arithmetic number, because the mean of its divisors is an integer number (6072922).

Almost surely, 2^12145843 is an apocalyptic number.

12145843 is a deficient number, since it is larger than the sum of its proper divisors (1).

12145843 is an equidigital number, since it uses as much as digits as its factorization.

12145843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3840, while the sum is 28.

The square root of 12145843 is about 3485.0886645823. The cubic root of 12145843 is about 229.8666082228.

Adding to 12145843 its reverse (34854121), we get a palindrome (46999964).

The spelling of 12145843 in words is "twelve million, one hundred forty-five thousand, eight hundred forty-three".