420838420880 has 20 divisors (see below), whose sum is σ = 978449328732. Its totient is φ = 168335368320.

The previous prime is 420838420853. The next prime is 420838420909. The reversal of 420838420880 is 88024838024.

It can be written as a sum of positive squares in 2 ways, for example, as 280531241104 + 140307179776 = 529652^2 + 374576^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

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, 2630240051 + ... + 2630240210.

Almost surely, 2^420838420880 is an apocalyptic number.

420838420880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

420838420880 is an abundant number, since it is smaller than the sum of its proper divisors (557610907852).

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

420838420880 is a wasteful number, since it uses less digits than its factorization.

420838420880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5260480274 (or 5260480268 counting only the distinct ones).

The product of its (nonzero) digits is 786432, while the sum is 47.

The spelling of 420838420880 in words is "four hundred twenty billion, eight hundred thirty-eight million, four hundred twenty thousand, eight hundred eighty".