240039 has 12 divisors (see below), whose sum is σ = 351000. Its totient is φ = 158064.

The previous prime is 240017. The next prime is 240041. The reversal of 240039 is 930042.

It is not a de Polignac number, because 240039 - 2⁵ = 240007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240049) 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 11 ways as a sum of consecutive naturals, for example, 1252 + ... + 1430.

It is an arithmetic number, because the mean of its divisors is an integer number (29250).

2²⁴⁰⁰³⁹ is an apocalyptic number.

240039 is a deficient number, since it is larger than the sum of its proper divisors (110961).

240039 is a wasteful number, since it uses less digits than its factorization.

240039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334 (or 331 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 240039 is about 489.9377511480. The cubic root of 240039 is about 62.1480161053.

The spelling of 240039 in words is "two hundred forty thousand, thirty-nine".