120040 has 16 divisors (see below), whose sum is σ = 270180. Its totient is φ = 48000.

The previous prime is 120017. The next prime is 120041. The reversal of 120040 is 40021.

It can be written as a sum of positive squares in 2 ways, for example, as 119716 + 324 = 346^2 + 18^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (120041) 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, 1461 + ... + 1540.

2¹²⁰⁰⁴⁰ is an apocalyptic number.

120040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120040 is an abundant number, since it is smaller than the sum of its proper divisors (150140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

120040 is a wasteful number, since it uses less digits than its factorization.

120040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3012 (or 3008 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 120040 is about 346.4678917302. The cubic root of 120040 is about 49.3297213491.

Adding to 120040 its reverse (40021), we get a palindrome (160061).

The spelling of 120040 in words is "one hundred twenty thousand, forty", and thus it is an iban number.