424040020 has 12 divisors (see below), whose sum is σ = 890484084. Its totient is φ = 169616000.

The previous prime is 424040011. The next prime is 424040039. The reversal of 424040020 is 20040424.

It can be written as a sum of positive squares in 2 ways, for example, as 305970064 + 118069956 = 17492^2 + 10866^2 .

It is a junction number, because it is equal to n+sod(n) for n = 424039976 and 424040003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10600981 + ... + 10601020.

It is an arithmetic number, because the mean of its divisors is an integer number (74207007).

Almost surely, 2^424040020 is an apocalyptic number.

It is an amenable number.

424040020 is an abundant number, since it is smaller than the sum of its proper divisors (466444064).

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

424040020 is a wasteful number, since it uses less digits than its factorization.

424040020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21202010 (or 21202008 counting only the distinct ones).

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

The square root of 424040020 is about 20592.2320305498. The cubic root of 424040020 is about 751.2807863515.

Adding to 424040020 its reverse (20040424), we get a palindrome (444080444).

The spelling of 424040020 in words is "four hundred twenty-four million, forty thousand, twenty".