424540 has 12 divisors (see below), whose sum is σ = 891576. Its totient is φ = 169808.

The previous prime is 424537. The next prime is 424547. The reversal of 424540 is 45424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424547) 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, 10594 + ... + 10633.

It is an arithmetic number, because the mean of its divisors is an integer number (74298).

2⁴²⁴⁵⁴⁰ is an apocalyptic number.

It is an amenable number.

424540 is an abundant number, since it is smaller than the sum of its proper divisors (467036).

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

424540 is a wasteful number, since it uses less digits than its factorization.

424540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21236 (or 21234 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 424540 is about 651.5673411091. The cubic root of 424540 is about 75.1575945468.

Adding to 424540 its reverse (45424), we get a palindrome (469964).

The spelling of 424540 in words is "four hundred twenty-four thousand, five hundred forty".