1242430121297 has 2 divisors, whose sum is σ = 1242430121298. Its totient is φ = 1242430121296.

The previous prime is 1242430121287. The next prime is 1242430121347. The reversal of 1242430121297 is 7921210342421.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1177834848961 + 64595272336 = 1085281^2 + 254156^2 .

It is a cyclic number.

It is not a de Polignac number, because 1242430121297 - 2⁸ = 1242430121041 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1242430121297.

It is not a weakly prime, because it can be changed into another prime (1242430121287) 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, 621215060648 + 621215060649.

It is an arithmetic number, because the mean of its divisors is an integer number (621215060649).

Almost surely, 2^{1242430121297} is an apocalyptic number.

It is an amenable number.

1242430121297 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242430121297 is an equidigital number, since it uses as much as digits as its factorization.

1242430121297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 1242430121297 in words is "one trillion, two hundred forty-two billion, four hundred thirty million, one hundred twenty-one thousand, two hundred ninety-seven".