1245543421322 has 8 divisors (see below), whose sum is σ = 1872403350276. Its totient is φ = 621408971232.

The previous prime is 1245543421303. The next prime is 1245543421327. The reversal of 1245543421322 is 2231243455421.

It can be written as a sum of positive squares in 2 ways, for example, as 1217228964961 + 28314456361 = 1103281^2 + 168269^2 .

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 (1245543421327) 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, 681368573 + ... + 681370400.

Almost surely, 2^{1245543421322} is an apocalyptic number.

1245543421322 is a deficient number, since it is larger than the sum of its proper divisors (626859928954).

1245543421322 is a wasteful number, since it uses less digits than its factorization.

1245543421322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1362739432.

The product of its digits is 230400, while the sum is 38.

Adding to 1245543421322 its reverse (2231243455421), we get a palindrome (3476786876743).

The spelling of 1245543421322 in words is "one trillion, two hundred forty-five billion, five hundred forty-three million, four hundred twenty-one thousand, three hundred twenty-two".