240135 has 16 divisors (see below), whose sum is σ = 439296. Its totient is φ = 109728.

The previous prime is 240131. The next prime is 240139. The reversal of 240135 is 531042.

240135 = 28² + 29² + ... + 90².

240135 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (240131) and next prime (240139).

It is not a de Polignac number, because 240135 - 2² = 240131 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

240135 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1039 + ... + 1248.

It is an arithmetic number, because the mean of its divisors is an integer number (27456).

2²⁴⁰¹³⁵ is an apocalyptic number.

240135 is a deficient number, since it is larger than the sum of its proper divisors (199161).

240135 is a wasteful number, since it uses less digits than its factorization.

240135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2302.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 240135 is about 490.0357129843. The cubic root of 240135 is about 62.1563000569.

Adding to 240135 its reverse (531042), we get a palindrome (771177).

It can be divided in two parts, 240 and 135, that multiplied together give a square (32400 = 180²).

The spelling of 240135 in words is "two hundred forty thousand, one hundred thirty-five".