1242101565013 has 2 divisors, whose sum is σ = 1242101565014. Its totient is φ = 1242101565012.

The previous prime is 1242101564983. The next prime is 1242101565119. The reversal of 1242101565013 is 3105651012421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1199863916689 + 42237648324 = 1095383^2 + 205518^2 .

It is a cyclic number.

It is not a de Polignac number, because 1242101565013 - 2²⁵ = 1242068010581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242101565413) 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, 621050782506 + 621050782507.

It is an arithmetic number, because the mean of its divisors is an integer number (621050782507).

Almost surely, 2^{1242101565013} is an apocalyptic number.

It is an amenable number.

1242101565013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242101565013 is an equidigital number, since it uses as much as digits as its factorization.

1242101565013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 31.

Adding to 1242101565013 its reverse (3105651012421), we get a palindrome (4347752577434).

The spelling of 1242101565013 in words is "one trillion, two hundred forty-two billion, one hundred one million, five hundred sixty-five thousand, thirteen".