421300520 has 64 divisors (see below), whose sum is σ = 966712320. Its totient is φ = 165210624.

The previous prime is 421300519. The next prime is 421300549. The reversal of 421300520 is 25003124.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 650837 + ... + 651483.

It is an arithmetic number, because the mean of its divisors is an integer number (15104880).

Almost surely, 2^421300520 is an apocalyptic number.

421300520 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 421300520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (483356160).

421300520 is an abundant number, since it is smaller than the sum of its proper divisors (545411800).

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

421300520 is a wasteful number, since it uses less digits than its factorization.

421300520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954 (or 950 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 421300520 is about 20525.6064465828. The cubic root of 421300520 is about 749.6594127646.

Adding to 421300520 its reverse (25003124), we get a palindrome (446303644).

The spelling of 421300520 in words is "four hundred twenty-one million, three hundred thousand, five hundred twenty".