120424217 has 2 divisors, whose sum is σ = 120424218. Its totient is φ = 120424216.

The previous prime is 120424207. The next prime is 120424229. The reversal of 120424217 is 712424021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70241161 + 50183056 = 8381^2 + 7084^2 .

It is a cyclic number.

It is not a de Polignac number, because 120424217 - 2¹⁸ = 120162073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120424192 and 120424201.

It is not a weakly prime, because it can be changed into another prime (120424207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60212108 + 60212109.

It is an arithmetic number, because the mean of its divisors is an integer number (60212109).

Almost surely, 2^120424217 is an apocalyptic number.

It is an amenable number.

120424217 is a deficient number, since it is larger than the sum of its proper divisors (1).

120424217 is an equidigital number, since it uses as much as digits as its factorization.

120424217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 120424217 is about 10973.7968361001. The cubic root of 120424217 is about 493.8229585720.

Adding to 120424217 its reverse (712424021), we get a palindrome (832848238).

The spelling of 120424217 in words is "one hundred twenty million, four hundred twenty-four thousand, two hundred seventeen".