424421320 has 32 divisors (see below), whose sum is σ = 1011123000. Its totient is φ = 159781888.

The previous prime is 424421311. The next prime is 424421321. The reversal of 424421320 is 23124424.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 422466916 + 1954404 = 20554^2 + 1398^2 .

It is a junction number, because it is equal to n+sod(n) for n = 424421291 and 424421300.

It is not an unprimeable number, because it can be changed into a prime (424421321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 311395 + ... + 312754.

Almost surely, 2^424421320 is an apocalyptic number.

424421320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

424421320 is an abundant number, since it is smaller than the sum of its proper divisors (586701680).

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

424421320 is a wasteful number, since it uses less digits than its factorization.

424421320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624177 (or 624173 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 424421320 is about 20601.4882957518. The cubic root of 424421320 is about 751.5059046814.

Adding to 424421320 its reverse (23124424), we get a palindrome (447545744).

The spelling of 424421320 in words is "four hundred twenty-four million, four hundred twenty-one thousand, three hundred twenty".