120505 has 16 divisors (see below), whose sum is σ = 180864. Its totient is φ = 74880.

The previous prime is 120503. The next prime is 120511. The reversal of 120505 is 505021.

It is not a de Polignac number, because 120505 - 2¹ = 120503 is a prime.

It is a Duffinian number.

120505 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (120503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229 + ... + 541.

It is an arithmetic number, because the mean of its divisors is an integer number (11304).

2¹²⁰⁵⁰⁵ is an apocalyptic number.

It is an amenable number.

120505 is a deficient number, since it is larger than the sum of its proper divisors (60359).

120505 is a wasteful number, since it uses less digits than its factorization.

120505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336.

The product of its (nonzero) digits is 50, while the sum is 13.

The square root of 120505 is about 347.1383009695. The cubic root of 120505 is about 49.3933356032.

Adding to 120505 its reverse (505021), we get a palindrome (625526).

It can be divided in two parts, 120 and 505, that added together give a 4-th power (625 = 5⁴).

The spelling of 120505 in words is "one hundred twenty thousand, five hundred five".