240245 has 4 divisors (see below), whose sum is σ = 288300. Its totient is φ = 192192.

The previous prime is 240209. The next prime is 240257. The reversal of 240245 is 542042.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 542042 = 2 ⋅271021.

It can be written as a sum of positive squares in 2 ways, for example, as 47524 + 192721 = 218^2 + 439^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240245 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 24020 + ... + 24029.

It is an arithmetic number, because the mean of its divisors is an integer number (72075).

2²⁴⁰²⁴⁵ is an apocalyptic number.

It is an amenable number.

240245 is a deficient number, since it is larger than the sum of its proper divisors (48055).

240245 is an equidigital number, since it uses as much as digits as its factorization.

240245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48054.

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 240245 is about 490.1479368517. The cubic root of 240245 is about 62.1657893709.

Adding to 240245 its reverse (542042), we get a palindrome (782287).

The spelling of 240245 in words is "two hundred forty thousand, two hundred forty-five".