421077216 has 384 divisors, whose sum is σ = 1463132160. Its totient is φ = 103219200.

The previous prime is 421077197. The next prime is 421077229. The reversal of 421077216 is 612770124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10270156 + ... + 10270196.

It is an arithmetic number, because the mean of its divisors is an integer number (3810240).

Almost surely, 2^421077216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421077216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (731566080).

421077216 is an abundant number, since it is smaller than the sum of its proper divisors (1042054944).

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

421077216 is a wasteful number, since it uses less digits than its factorization.

421077216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 421077216 is about 20520.1660811992. The cubic root of 421077216 is about 749.5269407938.

The spelling of 421077216 in words is "four hundred twenty-one million, seventy-seven thousand, two hundred sixteen".