120847717 has 2 divisors, whose sum is σ = 120847718. Its totient is φ = 120847716.

The previous prime is 120847693. The next prime is 120847723. The reversal of 120847717 is 717748021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116661601 + 4186116 = 10801^2 + 2046^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120847717 is a prime.

It is a super-2 number, since 2×120847717² = 29208341408224178, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120847117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60423858 + 60423859.

It is an arithmetic number, because the mean of its divisors is an integer number (60423859).

Almost surely, 2^120847717 is an apocalyptic number.

It is an amenable number.

120847717 is a deficient number, since it is larger than the sum of its proper divisors (1).

120847717 is an equidigital number, since it uses as much as digits as its factorization.

120847717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21952, while the sum is 37.

The square root of 120847717 is about 10993.0758661987. The cubic root of 120847717 is about 494.4011627177.

The spelling of 120847717 in words is "one hundred twenty million, eight hundred forty-seven thousand, seven hundred seventeen".