240145 has 4 divisors (see below), whose sum is σ = 288180. Its totient is φ = 192112.

The previous prime is 240139. The next prime is 240151. The reversal of 240145 is 541042.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (240139) and next prime (240151).

It can be written as a sum of positive squares in 2 ways, for example, as 101761 + 138384 = 319^2 + 372^2 .

It is a cyclic number.

It is not a de Polignac number, because 240145 - 2⁵ = 240113 is a prime.

240145 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24010 + ... + 24019.

It is an arithmetic number, because the mean of its divisors is an integer number (72045).

2²⁴⁰¹⁴⁵ is an apocalyptic number.

It is an amenable number.

240145 is a deficient number, since it is larger than the sum of its proper divisors (48035).

240145 is an equidigital number, since it uses as much as digits as its factorization.

240145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48034.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 240145 is about 490.0459162160. The cubic root of 240145 is about 62.1571628415.

Adding to 240145 its reverse (541042), we get a palindrome (781187).

The spelling of 240145 in words is "two hundred forty thousand, one hundred forty-five".