424020 has 48 divisors (see below), whose sum is σ = 1225728. Its totient is φ = 109440.

The previous prime is 424019. The next prime is 424027. The reversal of 424020 is 20424.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 423987 and 424005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2125 + ... + 2315.

It is an arithmetic number, because the mean of its divisors is an integer number (25536).

2⁴²⁴⁰²⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 424020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (612864).

424020 is an abundant number, since it is smaller than the sum of its proper divisors (801708).

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

424020 is a wasteful number, since it uses less digits than its factorization.

424020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240 (or 238 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 424020 is about 651.1681810408. The cubic root of 424020 is about 75.1268962878.

Adding to 424020 its reverse (20424), we get a palindrome (444444).

The spelling of 424020 in words is "four hundred twenty-four thousand, twenty", and thus it is an iban number.