424321 has 4 divisors (see below), whose sum is σ = 426544. Its totient is φ = 422100.

The previous prime is 424313. The next prime is 424331. The reversal of 424321 is 123424.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 424321 - 2³ = 424313 is a prime.

It is a super-2 number, since 2×424321² = 360096622082, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 424295 and 424304.

It is not an unprimeable number, because it can be changed into a prime (424331) 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, 795 + ... + 1216.

It is an arithmetic number, because the mean of its divisors is an integer number (106636).

2⁴²⁴³²¹ is an apocalyptic number.

It is an amenable number.

424321 is a deficient number, since it is larger than the sum of its proper divisors (2223).

424321 is a wasteful number, since it uses less digits than its factorization.

424321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2222.

The product of its digits is 192, while the sum is 16.

The square root of 424321 is about 651.3992631252. The cubic root of 424321 is about 75.1446689141.

Adding to 424321 its reverse (123424), we get a palindrome (547745).

The spelling of 424321 in words is "four hundred twenty-four thousand, three hundred twenty-one", and thus it is an iban number.