120664171 has 4 divisors (see below), whose sum is σ = 120699144. Its totient is φ = 120629200.

The previous prime is 120664151. The next prime is 120664177. The reversal of 120664171 is 171466021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 171466021 = 283 ⋅605887.

It is a cyclic number.

It is not a de Polignac number, because 120664171 - 2⁷ = 120664043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120664177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11665 + ... + 19426.

It is an arithmetic number, because the mean of its divisors is an integer number (30174786).

Almost surely, 2^120664171 is an apocalyptic number.

120664171 is a deficient number, since it is larger than the sum of its proper divisors (34973).

120664171 is an equidigital number, since it uses as much as digits as its factorization.

120664171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34972.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 120664171 is about 10984.7244389652. The cubic root of 120664171 is about 494.1507336685.

The spelling of 120664171 in words is "one hundred twenty million, six hundred sixty-four thousand, one hundred seventy-one".