424420004020 has 12 divisors (see below), whose sum is σ = 891282008484. Its totient is φ = 169768001600.

The previous prime is 424420004011. The next prime is 424420004059. The reversal of 424420004020 is 20400024424.

It can be written as a sum of positive squares in 2 ways, for example, as 77892344464 + 346527659556 = 279092^2 + 588666^2 .

It is a junction number, because it is equal to n+sod(n) for n = 424420003982 and 424420004000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10610500081 + ... + 10610500120.

It is an arithmetic number, because the mean of its divisors is an integer number (74273500707).

Almost surely, 2^424420004020 is an apocalyptic number.

It is an amenable number.

424420004020 is an abundant number, since it is smaller than the sum of its proper divisors (466862004464).

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

424420004020 is a wasteful number, since it uses less digits than its factorization.

424420004020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21221000210 (or 21221000208 counting only the distinct ones).

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

Adding to 424420004020 its reverse (20400024424), we get a palindrome (444820028444).

The spelling of 424420004020 in words is "four hundred twenty-four billion, four hundred twenty million, four thousand, twenty".