1242142241443 has 2 divisors, whose sum is σ = 1242142241444. Its totient is φ = 1242142241442.

The previous prime is 1242142241401. The next prime is 1242142241479. The reversal of 1242142241443 is 3441422412421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1242142241443 - 2¹³ = 1242142233251 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1242142241399 and 1242142241408.

It is not a weakly prime, because it can be changed into another prime (1242142248443) 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 as a sum of consecutive naturals, namely, 621071120721 + 621071120722.

It is an arithmetic number, because the mean of its divisors is an integer number (621071120722).

Almost surely, 2^{1242142241443} is an apocalyptic number.

1242142241443 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242142241443 is an equidigital number, since it uses as much as digits as its factorization.

1242142241443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 49152, while the sum is 34.

Adding to 1242142241443 its reverse (3441422412421), we get a palindrome (4683564653864).

The spelling of 1242142241443 in words is "one trillion, two hundred forty-two billion, one hundred forty-two million, two hundred forty-one thousand, four hundred forty-three".