421985280 has 176 divisors, whose sum is σ = 1370081664. Its totient is φ = 110837760.

The previous prime is 421985257. The next prime is 421985309. The reversal of 421985280 is 82589124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1274715 + ... + 1275045.

Almost surely, 2^421985280 is an apocalyptic number.

421985280 is a gapful number since it is divisible by the number (40) 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 421985280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (685040832).

421985280 is an abundant number, since it is smaller than the sum of its proper divisors (948096384).

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

421985280 is a wasteful number, since it uses less digits than its factorization.

421985280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442 (or 424 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 421985280 is about 20542.2803018555. The cubic root of 421985280 is about 750.0653454176.

The spelling of 421985280 in words is "four hundred twenty-one million, nine hundred eighty-five thousand, two hundred eighty".