240923 has 4 divisors (see below), whose sum is σ = 243720. Its totient is φ = 238128.

The previous prime is 240913. The next prime is 240943. The reversal of 240923 is 329042.

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

It is a cyclic number.

It is not a de Polignac number, because 240923 - 2⁶ = 240859 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 240895 and 240904.

It is not an unprimeable number, because it can be changed into a prime (240913) 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 3 ways as a sum of consecutive naturals, for example, 1265 + ... + 1442.

It is an arithmetic number, because the mean of its divisors is an integer number (60930).

2²⁴⁰⁹²³ is an apocalyptic number.

240923 is a deficient number, since it is larger than the sum of its proper divisors (2797).

240923 is an equidigital number, since it uses as much as digits as its factorization.

240923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2796.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 240923 is about 490.8390774989. The cubic root of 240923 is about 62.2242141983.

Adding to 240923 its reverse (329042), we get a palindrome (569965).

The spelling of 240923 in words is "two hundred forty thousand, nine hundred twenty-three".