12242243242 has 4 divisors (see below), whose sum is σ = 18363364866. Its totient is φ = 6121121620.

The previous prime is 12242243239. The next prime is 12242243261. The reversal of 12242243242 is 24234224221.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 9602236081 + 2640007161 = 97991^2 + 51381^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12242243242.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3060560809 + ... + 3060560812.

Almost surely, 2^12242243242 is an apocalyptic number.

12242243242 is a deficient number, since it is larger than the sum of its proper divisors (6121121624).

12242243242 is an equidigital number, since it uses as much as digits as its factorization.

12242243242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6121121623.

The product of its digits is 12288, while the sum is 28.

Adding to 12242243242 its reverse (24234224221), we get a palindrome (36476467463).

The spelling of 12242243242 in words is "twelve billion, two hundred forty-two million, two hundred forty-three thousand, two hundred forty-two".