12040223 has 4 divisors (see below), whose sum is σ = 12966408. Its totient is φ = 11114040.

The previous prime is 12040213. The next prime is 12040253. The reversal of 12040223 is 32204021.

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 12040223 - 2⁶ = 12040159 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12040198 and 12040207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12040213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 463073 + ... + 463098.

It is an arithmetic number, because the mean of its divisors is an integer number (3241602).

Almost surely, 2^12040223 is an apocalyptic number.

12040223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12040223 is a deficient number, since it is larger than the sum of its proper divisors (926185).

12040223 is an equidigital number, since it uses as much as digits as its factorization.

12040223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926184.

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

The square root of 12040223 is about 3469.9024481965. The cubic root of 12040223 is about 229.1983623525.

Adding to 12040223 its reverse (32204021), we get a palindrome (44244244).

The spelling of 12040223 in words is "twelve million, forty thousand, two hundred twenty-three".