421023287808 has 200 divisors, whose sum is σ = 1268856951648. Its totient is φ = 138977150976.

The previous prime is 421023287761. The next prime is 421023287813. The reversal of 421023287808 is 808782320124.

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 19 ways as a sum of consecutive naturals, for example, 4222335 + ... + 4320897.

Almost surely, 2^421023287808 is an apocalyptic number.

421023287808 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421023287808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (634428475824).

421023287808 is an abundant number, since it is smaller than the sum of its proper divisors (847833663840).

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

421023287808 is an equidigital number, since it uses as much as digits as its factorization.

421023287808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98696 (or 98671 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 45.

The spelling of 421023287808 in words is "four hundred twenty-one billion, twenty-three million, two hundred eighty-seven thousand, eight hundred eight".