240505 has 8 divisors (see below), whose sum is σ = 292032. Its totient is φ = 190128.

The previous prime is 240503. The next prime is 240509. The reversal of 240505 is 505042.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 240505 - 2¹ = 240503 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (240503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282 + ... + 748.

It is an arithmetic number, because the mean of its divisors is an integer number (36504).

2²⁴⁰⁵⁰⁵ is an apocalyptic number.

It is an amenable number.

240505 is a deficient number, since it is larger than the sum of its proper divisors (51527).

240505 is a wasteful number, since it uses less digits than its factorization.

240505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575.

The product of its (nonzero) digits is 200, while the sum is 16.

The square root of 240505 is about 490.4130911793. The cubic root of 240505 is about 62.1882071500.

Adding to 240505 its reverse (505042), we get a palindrome (745547).

The spelling of 240505 in words is "two hundred forty thousand, five hundred five".