223421 has 8 divisors (see below), whose sum is σ = 256800. Its totient is φ = 192240.

The previous prime is 223403. The next prime is 223423. The reversal of 223421 is 124322.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 223421 - 2¹⁴ = 207037 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 223396 and 223405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223423) 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 7 ways as a sum of consecutive naturals, for example, 326 + ... + 743.

It is an arithmetic number, because the mean of its divisors is an integer number (32100).

2²²³⁴²¹ is an apocalyptic number.

It is an amenable number.

223421 is a deficient number, since it is larger than the sum of its proper divisors (33379).

223421 is a wasteful number, since it uses less digits than its factorization.

223421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099.

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

The square root of 223421 is about 472.6743064733. The cubic root of 223421 is about 60.6794073524.

Adding to 223421 its reverse (124322), we get a palindrome (347743).

Subtracting from 223421 its reverse (124322), we obtain a palindrome (99099).

It can be divided in two parts, 22 and 3421, that added together give a palindrome (3443).

The spelling of 223421 in words is "two hundred twenty-three thousand, four hundred twenty-one", and thus it is an iban number.