421003040 has 96 divisors (see below), whose sum is σ = 1044441216. Its totient is φ = 160061440.

The previous prime is 421003039. The next prime is 421003069. The reversal of 421003040 is 40300124.

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, 857195 + ... + 857685.

It is an arithmetic number, because the mean of its divisors is an integer number (10879596).

Almost surely, 2^421003040 is an apocalyptic number.

421003040 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 421003040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (522220608).

421003040 is an abundant number, since it is smaller than the sum of its proper divisors (623438176).

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

421003040 is a wasteful number, since it uses less digits than its factorization.

421003040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762 (or 754 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 421003040 is about 20518.3586088166. The cubic root of 421003040 is about 749.4829265583.

Adding to 421003040 its reverse (40300124), we get a palindrome (461303164).

The spelling of 421003040 in words is "four hundred twenty-one million, three thousand, forty".