421313420 has 96 divisors (see below), whose sum is σ = 992791296. Its totient is φ = 148896000.

The previous prime is 421313419. The next prime is 421313489. The reversal of 421313420 is 24313124.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 421313392 and 421313401.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1488599 + ... + 1488881.

It is an arithmetic number, because the mean of its divisors is an integer number (10341576).

Almost surely, 2^421313420 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 421313420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (496395648).

421313420 is an abundant number, since it is smaller than the sum of its proper divisors (571477876).

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

421313420 is a wasteful number, since it uses less digits than its factorization.

421313420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471 (or 469 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 421313420 is about 20525.9206858060. The cubic root of 421313420 is about 749.6670640786.

Adding to 421313420 its reverse (24313124), we get a palindrome (445626544).

The spelling of 421313420 in words is "four hundred twenty-one million, three hundred thirteen thousand, four hundred twenty".