12422005 has 8 divisors (see below), whose sum is σ = 15420600. Its totient is φ = 9594816.

The previous prime is 12421987. The next prime is 12422009. The reversal of 12422005 is 50022421.

12422005 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1306449 + 11115556 = 1143^2 + 3334^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12422005 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12422005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12422009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42690 + ... + 42979.

It is an arithmetic number, because the mean of its divisors is an integer number (1927575).

Almost surely, 2^12422005 is an apocalyptic number.

It is an amenable number.

12422005 is a deficient number, since it is larger than the sum of its proper divisors (2998595).

12422005 is an equidigital number, since it uses as much as digits as its factorization.

12422005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85703.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 12422005 is about 3524.4864874191. The cubic root of 12422005 is about 231.5957399515.

Adding to 12422005 its reverse (50022421), we get a palindrome (62444426).

The spelling of 12422005 in words is "twelve million, four hundred twenty-two thousand, five".