440123 has 4 divisors (see below), whose sum is σ = 446760. Its totient is φ = 433488.

The previous prime is 440101. The next prime is 440131. The reversal of 440123 is 321044.

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 440123 - 2⁸ = 439867 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 440098 and 440107.

It is not an unprimeable number, because it can be changed into a prime (440183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3218 + ... + 3351.

It is an arithmetic number, because the mean of its divisors is an integer number (111690).

2⁴⁴⁰¹²³ is an apocalyptic number.

440123 is a deficient number, since it is larger than the sum of its proper divisors (6637).

440123 is an equidigital number, since it uses as much as digits as its factorization.

440123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6636.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 440123 is about 663.4176663309. The cubic root of 440123 is about 76.0661358754.

Adding to 440123 its reverse (321044), we get a palindrome (761167).

The spelling of 440123 in words is "four hundred forty thousand, one hundred twenty-three", and thus it is an iban number.