240045 has 16 divisors (see below), whose sum is σ = 413952. Its totient is φ = 118080.

The previous prime is 240043. The next prime is 240047. The reversal of 240045 is 540042.

It is an interprime number because it is at equal distance from previous prime (240043) and next prime (240047).

It is not a de Polignac number, because 240045 - 2¹ = 240043 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240041) 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 15 ways as a sum of consecutive naturals, for example, 421 + ... + 810.

It is an arithmetic number, because the mean of its divisors is an integer number (25872).

2²⁴⁰⁰⁴⁵ is an apocalyptic number.

It is an amenable number.

240045 is a deficient number, since it is larger than the sum of its proper divisors (173907).

240045 is a wasteful number, since it uses less digits than its factorization.

240045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252.

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 240045 is about 489.9438743366. The cubic root of 240045 is about 62.1485339170.

Adding to 240045 its reverse (540042), we get a palindrome (780087).

The spelling of 240045 in words is "two hundred forty thousand, forty-five".