421707384 has 160 divisors (see below), whose sum is σ = 1393920000. Its totient is φ = 116562240.

The previous prime is 421707383. The next prime is 421707401. The reversal of 421707384 is 483707124.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421707383) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 139117 + ... + 142115.

It is an arithmetic number, because the mean of its divisors is an integer number (8712000).

Almost surely, 2^421707384 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 421707384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (696960000).

421707384 is an abundant number, since it is smaller than the sum of its proper divisors (972212616).

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

421707384 is a wasteful number, since it uses less digits than its factorization.

421707384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3055 (or 3042 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 421707384 is about 20535.5151871094. The cubic root of 421707384 is about 749.9006588424.

The spelling of 421707384 in words is "four hundred twenty-one million, seven hundred seven thousand, three hundred eighty-four".