120115717 has 2 divisors, whose sum is σ = 120115718. Its totient is φ = 120115716.

The previous prime is 120115661. The next prime is 120115747. The reversal of 120115717 is 717511021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117700801 + 2414916 = 10849^2 + 1554^2 .

It is an emirp because it is prime and its reverse (717511021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120115717 - 2¹⁹ = 119591429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120115691 and 120115700.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120115747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60057858 + 60057859.

It is an arithmetic number, because the mean of its divisors is an integer number (60057859).

Almost surely, 2^120115717 is an apocalyptic number.

It is an amenable number.

120115717 is a deficient number, since it is larger than the sum of its proper divisors (1).

120115717 is an equidigital number, since it uses as much as digits as its factorization.

120115717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 490, while the sum is 25.

The square root of 120115717 is about 10959.7316116774. The cubic root of 120115717 is about 493.4009098547.

Adding to 120115717 its reverse (717511021), we get a palindrome (837626738).

The spelling of 120115717 in words is "one hundred twenty million, one hundred fifteen thousand, seven hundred seventeen".