12005417 has 4 divisors (see below), whose sum is σ = 12711636. Its totient is φ = 11299200.

The previous prime is 12005407. The next prime is 12005419. The reversal of 12005417 is 71450021.

12005417 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71450021 = 137 ⋅521533.

It can be written as a sum of positive squares in 2 ways, for example, as 9803161 + 2202256 = 3131^2 + 1484^2 .

It is a cyclic number.

It is not a de Polignac number, because 12005417 - 2¹⁶ = 11939881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12005419) 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 in 3 ways as a sum of consecutive naturals, for example, 353084 + ... + 353117.

It is an arithmetic number, because the mean of its divisors is an integer number (3177909).

Almost surely, 2^12005417 is an apocalyptic number.

12005417 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12005417 is a deficient number, since it is larger than the sum of its proper divisors (706219).

12005417 is an equidigital number, since it uses as much as digits as its factorization.

12005417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706218.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 12005417 is about 3464.8834035217. The cubic root of 12005417 is about 228.9772928674.

Adding to 12005417 its reverse (71450021), we get a palindrome (83455438).

The spelling of 12005417 in words is "twelve million, five thousand, four hundred seventeen".