240455 has 4 divisors (see below), whose sum is σ = 288552. Its totient is φ = 192360.

The previous prime is 240437. The next prime is 240473. The reversal of 240455 is 554042.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 554042 = 2 ⋅277021.

It is an interprime number because it is at equal distance from previous prime (240437) and next prime (240473).

It is not a de Polignac number, because 240455 - 2¹⁰ = 239431 is a prime.

It is a Duffinian number.

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, 24041 + ... + 24050.

It is an arithmetic number, because the mean of its divisors is an integer number (72138).

2²⁴⁰⁴⁵⁵ is an apocalyptic number.

240455 is a deficient number, since it is larger than the sum of its proper divisors (48097).

240455 is an equidigital number, since it uses as much as digits as its factorization.

240455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48096.

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 240455 is about 490.3621110975. The cubic root of 240455 is about 62.1838972939.

Adding to 240455 its reverse (554042), we get a palindrome (794497).

The spelling of 240455 in words is "two hundred forty thousand, four hundred fifty-five".