421341420 has 96 divisors (see below), whose sum is σ = 1229437440. Its totient is φ = 107722240.

The previous prime is 421341419. The next prime is 421341421. The reversal of 421341420 is 24143124.

It is an interprime number because it is at equal distance from previous prime (421341419) and next prime (421341421).

It is not an unprimeable number, because it can be changed into a prime (421341421) 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, 143689 + ... + 146591.

It is an arithmetic number, because the mean of its divisors is an integer number (12806640).

Almost surely, 2^421341420 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 421341420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (614718720).

421341420 is an abundant number, since it is smaller than the sum of its proper divisors (808096020).

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

421341420 is a wasteful number, since it uses less digits than its factorization.

421341420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3015 (or 3013 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 421341420 is about 20526.6027388850. The cubic root of 421341420 is about 749.6836710445.

Adding to 421341420 its reverse (24143124), we get a palindrome (445484544).

The spelling of 421341420 in words is "four hundred twenty-one million, three hundred forty-one thousand, four hundred twenty".