421341520 has 80 divisors (see below), whose sum is σ = 1021756032. Its totient is φ = 161441280.

The previous prime is 421341509. The next prime is 421341559. The reversal of 421341520 is 25143124.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 421341491 and 421341500.

It is a congruent number.

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, 181165 + ... + 183475.

Almost surely, 2^421341520 is an apocalyptic number.

421341520 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 421341520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (510878016).

421341520 is an abundant number, since it is smaller than the sum of its proper divisors (600414512).

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

421341520 is a wasteful number, since it uses less digits than its factorization.

421341520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2420 (or 2414 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 421341520 is about 20526.6051747482. The cubic root of 421341520 is about 749.6837303538.

Adding to 421341520 its reverse (25143124), we get a palindrome (446484644).

The spelling of 421341520 in words is "four hundred twenty-one million, three hundred forty-one thousand, five hundred twenty".