1242212825443 has 2 divisors, whose sum is σ = 1242212825444. Its totient is φ = 1242212825442.

The previous prime is 1242212825423. The next prime is 1242212825507. The reversal of 1242212825443 is 3445282122421.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1242212825443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1242212825396 and 1242212825405.

It is not a weakly prime, because it can be changed into another prime (1242212825423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621106412721 + 621106412722.

It is an arithmetic number, because the mean of its divisors is an integer number (621106412722).

Almost surely, 2^{1242212825443} is an apocalyptic number.

1242212825443 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242212825443 is an equidigital number, since it uses as much as digits as its factorization.

1242212825443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 245760, while the sum is 40.

Adding to 1242212825443 its reverse (3445282122421), we get a palindrome (4687494947864).

The spelling of 1242212825443 in words is "one trillion, two hundred forty-two billion, two hundred twelve million, eight hundred twenty-five thousand, four hundred forty-three".