421033472 has 40 divisors (see below), whose sum is σ = 847044000. Its totient is φ = 209065984.

The previous prime is 421033453. The next prime is 421033493. The reversal of 421033472 is 274330124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73529 + ... + 79047.

It is an arithmetic number, because the mean of its divisors is an integer number (21176100).

Almost surely, 2^421033472 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 421033472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (423522000).

421033472 is an abundant number, since it is smaller than the sum of its proper divisors (426010528).

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

421033472 is an equidigital number, since it uses as much as digits as its factorization.

421033472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5686 (or 5670 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 421033472 is about 20519.1001752026. The cubic root of 421033472 is about 749.5009847928.

Adding to 421033472 its reverse (274330124), we get a palindrome (695363596).

The spelling of 421033472 in words is "four hundred twenty-one million, thirty-three thousand, four hundred seventy-two".