120685 has 4 divisors (see below), whose sum is σ = 144828. Its totient is φ = 96544.

The previous prime is 120677. The next prime is 120689. The reversal of 120685 is 586021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 586021 = 53 ⋅11057.

It can be written as a sum of positive squares in 2 ways, for example, as 64516 + 56169 = 254^2 + 237^2 .

It is a cyclic number.

It is not a de Polignac number, because 120685 - 2³ = 120677 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12064 + ... + 12073.

It is an arithmetic number, because the mean of its divisors is an integer number (36207).

2¹²⁰⁶⁸⁵ is an apocalyptic number.

It is an amenable number.

120685 is a deficient number, since it is larger than the sum of its proper divisors (24143).

120685 is an equidigital number, since it uses as much as digits as its factorization.

120685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24142.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 120685 is about 347.3974668877. The cubic root of 120685 is about 49.4179165399.

The spelling of 120685 in words is "one hundred twenty thousand, six hundred eighty-five".