1243321240422 has 32 divisors (see below), whose sum is σ = 2521394875872. Its totient is φ = 408651450624.

The previous prime is 1243321240319. The next prime is 1243321240481. The reversal of 1243321240422 is 2240421233421.

It is a self number, because there is not a number n which added to its sum of digits gives 1243321240422.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1224528 + ... + 1996524.

It is an arithmetic number, because the mean of its divisors is an integer number (78793589871).

Almost surely, 2^{1243321240422} is an apocalyptic number.

1243321240422 is an abundant number, since it is smaller than the sum of its proper divisors (1278073635450).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1243321240422 is a wasteful number, since it uses less digits than its factorization.

1243321240422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775752.

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 1243321240422 its reverse (2240421233421), we get a palindrome (3483742473843).

The spelling of 1243321240422 in words is "one trillion, two hundred forty-three billion, three hundred twenty-one million, two hundred forty thousand, four hundred twenty-two".