421140304 has 80 divisors (see below), whose sum is σ = 936940032. Its totient is φ = 181868544.

The previous prime is 421140287. The next prime is 421140319. The reversal of 421140304 is 403041124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 223912 + ... + 225784.

Almost surely, 2^421140304 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 421140304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (468470016).

421140304 is an abundant number, since it is smaller than the sum of its proper divisors (515799728).

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

421140304 is a wasteful number, since it uses less digits than its factorization.

421140304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1964 (or 1958 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 421140304 is about 20521.7032431521. The cubic root of 421140304 is about 749.5643716121.

Adding to 421140304 its reverse (403041124), we get a palindrome (824181428).

The spelling of 421140304 in words is "four hundred twenty-one million, one hundred forty thousand, three hundred four".