421401304 has 96 divisors (see below), whose sum is σ = 905158800. Its totient is φ = 183306240.

The previous prime is 421401293. The next prime is 421401307. The reversal of 421401304 is 403104124.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421401307) 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 23 ways as a sum of consecutive naturals, for example, 2328094 + ... + 2328274.

Almost surely, 2^421401304 is an apocalyptic number.

It is an amenable number.

421401304 is an abundant number, since it is smaller than the sum of its proper divisors (483757496).

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

421401304 is a wasteful number, since it uses less digits than its factorization.

421401304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293 (or 272 counting only the distinct ones).

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

The square root of 421401304 is about 20528.0613794873. The cubic root of 421401304 is about 749.7191861305.

Adding to 421401304 its reverse (403104124), we get a palindrome (824505428).

The spelling of 421401304 in words is "four hundred twenty-one million, four hundred one thousand, three hundred four".