421232424 has 128 divisors (see below), whose sum is σ = 1133568000. Its totient is φ = 130201344.

The previous prime is 421232381. The next prime is 421232437. The reversal of 421232424 is 424232124.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 421232394 and 421232403.

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, 2584167 + ... + 2584329.

It is an arithmetic number, because the mean of its divisors is an integer number (8856000).

Almost surely, 2^421232424 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 421232424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (566784000).

421232424 is an abundant number, since it is smaller than the sum of its proper divisors (712335576).

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

421232424 is a wasteful number, since it uses less digits than its factorization.

421232424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327 (or 323 counting only the distinct ones).

The product of its digits is 3072, while the sum is 24.

The square root of 421232424 is about 20523.9475735054. The cubic root of 421232424 is about 749.6190207281.

Adding to 421232424 its reverse (424232124), we get a palindrome (845464548).

The spelling of 421232424 in words is "four hundred twenty-one million, two hundred thirty-two thousand, four hundred twenty-four".