240085 has 4 divisors (see below), whose sum is σ = 288108. Its totient is φ = 192064.

The previous prime is 240073. The next prime is 240089. The reversal of 240085 is 580042.

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: 580042 = 2 ⋅290021.

It can be written as a sum of positive squares in 2 ways, for example, as 62001 + 178084 = 249^2 + 422^2 .

It is a cyclic number.

It is not a de Polignac number, because 240085 - 2⁷ = 239957 is a prime.

It is a Duffinian number.

240085 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240089) 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 3 ways as a sum of consecutive naturals, for example, 24004 + ... + 24013.

It is an arithmetic number, because the mean of its divisors is an integer number (72027).

2²⁴⁰⁰⁸⁵ is an apocalyptic number.

It is an amenable number.

240085 is a deficient number, since it is larger than the sum of its proper divisors (48023).

240085 is an equidigital number, since it uses as much as digits as its factorization.

240085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48022.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 240085 is about 489.9846936385. The cubic root of 240085 is about 62.1519857743.

It can be divided in two parts, 2400 and 85, that added together give a triangular number (2485 = T₇₀).

The spelling of 240085 in words is "two hundred forty thousand, eighty-five".