12245642 has 8 divisors (see below), whose sum is σ = 18432036. Its totient is φ = 6101632.

The previous prime is 12245641. The next prime is 12245663. The reversal of 12245642 is 24654221.

It can be written as a sum of positive squares in 2 ways, for example, as 11015761 + 1229881 = 3319^2 + 1109^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12245641) 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 3 ways as a sum of consecutive naturals, for example, 9863 + ... + 11034.

Almost surely, 2^12245642 is an apocalyptic number.

12245642 is a deficient number, since it is larger than the sum of its proper divisors (6186394).

12245642 is a wasteful number, since it uses less digits than its factorization.

12245642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21192.

The product of its digits is 3840, while the sum is 26.

The square root of 12245642 is about 3499.3773731908. The cubic root of 12245642 is about 230.4944749234.

Adding to 12245642 its reverse (24654221), we get a palindrome (36899863).

The spelling of 12245642 in words is "twelve million, two hundred forty-five thousand, six hundred forty-two".