12840193 has 2 divisors, whose sum is σ = 12840194. Its totient is φ = 12840192.

The previous prime is 12840133. The next prime is 12840203. The reversal of 12840193 is 39104821.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12837889 + 2304 = 3583^2 + 48^2 .

It is a cyclic number.

It is not a de Polignac number, because 12840193 - 2¹⁷ = 12709121 is a prime.

It is not a weakly prime, because it can be changed into another prime (12840103) 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, 6420096 + 6420097.

It is an arithmetic number, because the mean of its divisors is an integer number (6420097).

Almost surely, 2^12840193 is an apocalyptic number.

It is an amenable number.

12840193 is a deficient number, since it is larger than the sum of its proper divisors (1).

12840193 is an equidigital number, since it uses as much as digits as its factorization.

12840193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 12840193 is about 3583.3215038564. The cubic root of 12840193 is about 234.1660070706.

The spelling of 12840193 in words is "twelve million, eight hundred forty thousand, one hundred ninety-three".