421302648 has 128 divisors (see below), whose sum is σ = 1199278080. Its totient is φ = 122411520.

The previous prime is 421302641. The next prime is 421302703. The reversal of 421302648 is 846203124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421302641) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 415390 + ... + 416402.

It is an arithmetic number, because the mean of its divisors is an integer number (9369360).

Almost surely, 2^421302648 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 421302648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (599639040).

421302648 is an abundant number, since it is smaller than the sum of its proper divisors (777975432).

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

421302648 is a wasteful number, since it uses less digits than its factorization.

421302648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109 (or 1105 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 421302648 is about 20525.6582842061. The cubic root of 421302648 is about 749.6606749456.

The spelling of 421302648 in words is "four hundred twenty-one million, three hundred two thousand, six hundred forty-eight".