421424332 has 24 divisors (see below), whose sum is σ = 887210240. Its totient is φ = 171104400.

The previous prime is 421424329. The next prime is 421424383. The reversal of 421424332 is 233424124.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 421424297 and 421424306.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 395544 + ... + 396607.

Almost surely, 2^421424332 is an apocalyptic number.

It is an amenable number.

421424332 is an abundant number, since it is smaller than the sum of its proper divisors (465785908).

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

421424332 is a wasteful number, since it uses less digits than its factorization.

421424332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792181 (or 792179 counting only the distinct ones).

The product of its digits is 4608, while the sum is 25.

The square root of 421424332 is about 20528.6222625874. The cubic root of 421424332 is about 749.7328423285.

Adding to 421424332 its reverse (233424124), we get a palindrome (654848456).

The spelling of 421424332 in words is "four hundred twenty-one million, four hundred twenty-four thousand, three hundred thirty-two".