12443421443242 has 16 divisors (see below), whose sum is σ = 18830709488520. Its totient is φ = 6166520614912.

The previous prime is 12443421443239. The next prime is 12443421443249. The reversal of 12443421443242 is 24234412434421.

It can be written as a sum of positive squares in 4 ways, for example, as 2026981485841 + 10416439957401 = 1423721^2 + 3227451^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12443421443195 and 12443421443204.

It is not an unprimeable number, because it can be changed into a prime (12443421443249) 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, 10572234 + ... + 11690122.

Almost surely, 2^{12443421443242} is an apocalyptic number.

12443421443242 is a deficient number, since it is larger than the sum of its proper divisors (6387288045278).

12443421443242 is a wasteful number, since it uses less digits than its factorization.

12443421443242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1167257.

The product of its digits is 589824, while the sum is 40.

Adding to 12443421443242 its reverse (24234412434421), we get a palindrome (36677833877663).

The spelling of 12443421443242 in words is "twelve trillion, four hundred forty-three billion, four hundred twenty-one million, four hundred forty-three thousand, two hundred forty-two".