12243402 has 12 divisors (see below), whose sum is σ = 26527410. Its totient is φ = 4081128.

The previous prime is 12243401. The next prime is 12243403. The reversal of 12243402 is 20434221.

It is an interprime number because it is at equal distance from previous prime (12243401) and next prime (12243403).

It can be written as a sum of positive squares in only one way, i.e., 10556001 + 1687401 = 3249^2 + 1299^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 680189 = 12243402 / (1 + 2 + 2 + 4 + 3 + 4 + 0 + 2).

It is not an unprimeable number, because it can be changed into a prime (12243401) 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 in 5 ways as a sum of consecutive naturals, for example, 340077 + ... + 340112.

Almost surely, 2^12243402 is an apocalyptic number.

12243402 is an abundant number, since it is smaller than the sum of its proper divisors (14284008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12243402 is a wasteful number, since it uses less digits than its factorization.

12243402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680197 (or 680194 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 12243402 is about 3499.0573016171. The cubic root of 12243402 is about 230.4804198794.

Adding to 12243402 its reverse (20434221), we get a palindrome (32677623).

The spelling of 12243402 in words is "twelve million, two hundred forty-three thousand, four hundred two".