120142717 has 2 divisors, whose sum is σ = 120142718. Its totient is φ = 120142716.

The previous prime is 120142709. The next prime is 120142741. The reversal of 120142717 is 717241021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115218756 + 4923961 = 10734^2 + 2219^2 .

It is a cyclic number.

It is not a de Polignac number, because 120142717 - 2³ = 120142709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120142691 and 120142700.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120142747) 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, 60071358 + 60071359.

It is an arithmetic number, because the mean of its divisors is an integer number (60071359).

Almost surely, 2^120142717 is an apocalyptic number.

It is an amenable number.

120142717 is a deficient number, since it is larger than the sum of its proper divisors (1).

120142717 is an equidigital number, since it uses as much as digits as its factorization.

120142717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 784, while the sum is 25.

The square root of 120142717 is about 10960.9633244528. The cubic root of 120142717 is about 493.4378765033.

Adding to 120142717 its reverse (717241021), we get a palindrome (837383738).

The spelling of 120142717 in words is "one hundred twenty million, one hundred forty-two thousand, seven hundred seventeen".