424420 has 12 divisors (see below), whose sum is σ = 891324. Its totient is φ = 169760.

The previous prime is 424397. The next prime is 424423. The reversal of 424420 is 24424.

424420 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 304704 + 119716 = 552^2 + 346^2 .

It is a junction number, because it is equal to n+sod(n) for n = 424394 and 424403.

It is not an unprimeable number, because it can be changed into a prime (424423) 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, 10591 + ... + 10630.

It is an arithmetic number, because the mean of its divisors is an integer number (74277).

2⁴²⁴⁴²⁰ is an apocalyptic number.

It is an amenable number.

424420 is an abundant number, since it is smaller than the sum of its proper divisors (466904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

424420 is a wasteful number, since it uses less digits than its factorization.

424420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21230 (or 21228 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 424420 is about 651.4752489542. The cubic root of 424420 is about 75.1505125590.

Adding to 424420 its reverse (24424), we get a palindrome (448844).

The spelling of 424420 in words is "four hundred twenty-four thousand, four hundred twenty", and thus it is an iban number.