12402205 has 4 divisors (see below), whose sum is σ = 14882652. Its totient is φ = 9921760.

The previous prime is 12402191. The next prime is 12402217. The reversal of 12402205 is 50220421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2277081 + 10125124 = 1509^2 + 3182^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12402205 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1240216 + ... + 1240225.

It is an arithmetic number, because the mean of its divisors is an integer number (3720663).

Almost surely, 2^12402205 is an apocalyptic number.

It is an amenable number.

12402205 is a deficient number, since it is larger than the sum of its proper divisors (2480447).

12402205 is an equidigital number, since it uses as much as digits as its factorization.

12402205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2480446.

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

The square root of 12402205 is about 3521.6764473756. The cubic root of 12402205 is about 231.4726241794.

Adding to 12402205 its reverse (50220421), we get a palindrome (62622626).

The spelling of 12402205 in words is "twelve million, four hundred two thousand, two hundred five".