424340 has 36 divisors (see below), whose sum is σ = 1038996. Its totient is φ = 145152.

The previous prime is 424339. The next prime is 424343. The reversal of 424340 is 43424.

It can be written as a sum of positive squares in 2 ways, for example, as 94864 + 329476 = 308^2 + 574^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424343) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 764 + ... + 1196.

It is an arithmetic number, because the mean of its divisors is an integer number (28861).

2⁴²⁴³⁴⁰ 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 424340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (519498).

424340 is an abundant number, since it is smaller than the sum of its proper divisors (614656).

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

424340 is a wasteful number, since it uses less digits than its factorization.

424340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456 (or 447 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 424340 is about 651.4138469514. The cubic root of 424340 is about 75.1457904922.

Adding to 424340 its reverse (43424), we get a palindrome (467764).

The spelling of 424340 in words is "four hundred twenty-four thousand, three hundred forty", and thus it is an iban number.