421530344 has 32 divisors (see below), whose sum is σ = 820902600. Its totient is φ = 202752000.

The previous prime is 421530301. The next prime is 421530353. The reversal of 421530344 is 443035124.

It can be written as a sum of positive squares in 4 ways, for example, as 413634244 + 7896100 = 20338^2 + 2810^2 .

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, 18344 + ... + 34344.

Almost surely, 2^421530344 is an apocalyptic number.

It is an amenable number.

421530344 is a deficient number, since it is larger than the sum of its proper divisors (399372256).

421530344 is a wasteful number, since it uses less digits than its factorization.

421530344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16133 (or 16129 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 421530344 is about 20531.2041536779. The cubic root of 421530344 is about 749.7957037632.

Adding to 421530344 its reverse (443035124), we get a palindrome (864565468).

The spelling of 421530344 in words is "four hundred twenty-one million, five hundred thirty thousand, three hundred forty-four".