424442020 has 24 divisors (see below), whose sum is σ = 908148024. Its totient is φ = 166573056.

The previous prime is 424441991. The next prime is 424442063. The reversal of 424442020 is 20244424.

It can be written as a sum of positive squares in 4 ways, for example, as 97772544 + 326669476 = 9888^2 + 18074^2 .

It is a junction number, because it is equal to n+sod(n) for n = 424441982 and 424442000.

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 7 ways as a sum of consecutive naturals, for example, 199149 + ... + 201268.

It is an arithmetic number, because the mean of its divisors is an integer number (37839501).

Almost surely, 2^424442020 is an apocalyptic number.

It is an amenable number.

424442020 is an abundant number, since it is smaller than the sum of its proper divisors (483706004).

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

424442020 is a wasteful number, since it uses less digits than its factorization.

424442020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400479 (or 400477 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 424442020 is about 20601.9906805143. The cubic root of 424442020 is about 751.5181220376.

Adding to 424442020 its reverse (20244424), we get a palindrome (444686444).

It can be divided in two parts, 4244 and 42020, that added together give a palindrome (46264).

The spelling of 424442020 in words is "four hundred twenty-four million, four hundred forty-two thousand, twenty".