120255217 has 8 divisors (see below), whose sum is σ = 125532392. Its totient is φ = 115084800.

The previous prime is 120255209. The next prime is 120255259. The reversal of 120255217 is 712552021.

It can be written as a sum of positive squares in 4 ways, for example, as 13256881 + 106998336 = 3641^2 + 10344^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 120255217 - 2³ = 120255209 is a prime.

It is a super-2 number, since 2×120255217² = 28922634431434178, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120255191 and 120255200.

It is not an unprimeable number, because it can be changed into a prime (120256217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24384 + ... + 28897.

It is an arithmetic number, because the mean of its divisors is an integer number (15691549).

Almost surely, 2^120255217 is an apocalyptic number.

It is an amenable number.

120255217 is a deficient number, since it is larger than the sum of its proper divisors (5277175).

120255217 is an equidigital number, since it uses as much as digits as its factorization.

120255217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53379.

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 120255217 is about 10966.0939718753. The cubic root of 120255217 is about 493.5918446191.

The spelling of 120255217 in words is "one hundred twenty million, two hundred fifty-five thousand, two hundred seventeen".