1321443326242 has 8 divisors (see below), whose sum is σ = 2134639219356. Its totient is φ = 609896919792.

The previous prime is 1321443326237. The next prime is 1321443326243. The reversal of 1321443326242 is 2426233441231.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1180045517401 + 141397808841 = 1086299^2 + 376029^2 .

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 (1321443326243) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 25412371633 + ... + 25412371684.

Almost surely, 2^{1321443326242} is an apocalyptic number.

1321443326242 is a deficient number, since it is larger than the sum of its proper divisors (813195893114).

1321443326242 is a wasteful number, since it uses less digits than its factorization.

1321443326242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50824743332.

The product of its digits is 165888, while the sum is 37.

Adding to 1321443326242 its reverse (2426233441231), we get a palindrome (3747676767473).

The spelling of 1321443326242 in words is "one trillion, three hundred twenty-one billion, four hundred forty-three million, three hundred twenty-six thousand, two hundred forty-two".