1242430121347 has 2 divisors, whose sum is σ = 1242430121348. Its totient is φ = 1242430121346.

The previous prime is 1242430121297. The next prime is 1242430121377. The reversal of 1242430121347 is 7431210342421.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (7431210342421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1242430121347 - 2²⁷ = 1242295903619 is a prime.

It is a super-2 number, since 2×1242430121347² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1242430121377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621215060673 + 621215060674.

It is an arithmetic number, because the mean of its divisors is an integer number (621215060674).

Almost surely, 2^{1242430121347} is an apocalyptic number.

1242430121347 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242430121347 is an equidigital number, since it uses as much as digits as its factorization.

1242430121347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 34.

Adding to 1242430121347 its reverse (7431210342421), we get a palindrome (8673640463768).

The spelling of 1242430121347 in words is "one trillion, two hundred forty-two billion, four hundred thirty million, one hundred twenty-one thousand, three hundred forty-seven".