120609 has 10 divisors (see below), whose sum is σ = 180290. Its totient is φ = 80352.

The previous prime is 120607. The next prime is 120619. The reversal of 120609 is 906021.

It can be written as a sum of positive squares in only one way, i.e., 88209 + 32400 = 297^2 + 180^2 .

It is not a de Polignac number, because 120609 - 2¹ = 120607 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120591 and 120600.

It is not an unprimeable number, because it can be changed into a prime (120607) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 664 + ... + 825.

It is an arithmetic number, because the mean of its divisors is an integer number (18029).

2¹²⁰⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

120609 is a deficient number, since it is larger than the sum of its proper divisors (59681).

120609 is an equidigital number, since it uses as much as digits as its factorization.

120609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1501 (or 1492 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 120609 is about 347.2880648683. The cubic root of 120609 is about 49.4075409055.

It can be divided in two parts, 120 and 609, that added together give a 6-th power (729 = 3⁶).

The spelling of 120609 in words is "one hundred twenty thousand, six hundred nine".