240745 has 8 divisors (see below), whose sum is σ = 292680. Its totient is φ = 190080.

The previous prime is 240743. The next prime is 240763. The reversal of 240745 is 547042.

It can be written as a sum of positive squares in 4 ways, for example, as 2601 + 238144 = 51^2 + 488^2 .

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

It is not a de Polignac number, because 240745 - 2¹ = 240743 is a prime.

240745 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (240743) 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, 175 + ... + 715.

It is an arithmetic number, because the mean of its divisors is an integer number (36585).

2²⁴⁰⁷⁴⁵ is an apocalyptic number.

It is an amenable number.

240745 is a deficient number, since it is larger than the sum of its proper divisors (51935).

240745 is an equidigital number, since it uses as much as digits as its factorization.

240745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635.

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 240745 is about 490.6577218388. The cubic root of 240745 is about 62.2088861489.

Adding to 240745 its reverse (547042), we get a palindrome (787787).

The spelling of 240745 in words is "two hundred forty thousand, seven hundred forty-five".