421401032 has 128 divisors (see below), whose sum is σ = 965986560. Its totient is φ = 170311680.

The previous prime is 421401023. The next prime is 421401037. The reversal of 421401032 is 230104124.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 421401032.

It is not an unprimeable number, because it can be changed into a prime (421401037) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1748432 + ... + 1748672.

It is an arithmetic number, because the mean of its divisors is an integer number (7546770).

Almost surely, 2^421401032 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 421401032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (482993280).

421401032 is an abundant number, since it is smaller than the sum of its proper divisors (544585528).

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

421401032 is a wasteful number, since it uses less digits than its factorization.

421401032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343 (or 339 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 421401032 is about 20528.0547544087. The cubic root of 421401032 is about 749.7190248245.

Adding to 421401032 its reverse (230104124), we get a palindrome (651505156).

The spelling of 421401032 in words is "four hundred twenty-one million, four hundred one thousand, thirty-two".