421704297 has 24 divisors (see below), whose sum is σ = 732788160. Its totient is φ = 228290400.

The previous prime is 421704289. The next prime is 421704301. The reversal of 421704297 is 792407124.

It is not a de Polignac number, because 421704297 - 2³ = 421704289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421704277) 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, 174954 + ... + 177347.

It is an arithmetic number, because the mean of its divisors is an integer number (30532840).

Almost surely, 2^421704297 is an apocalyptic number.

It is an amenable number.

421704297 is a deficient number, since it is larger than the sum of its proper divisors (311083863).

421704297 is a wasteful number, since it uses less digits than its factorization.

421704297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352333 (or 352330 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 421704297 is about 20535.4400245040. The cubic root of 421704297 is about 749.8988290199.

The spelling of 421704297 in words is "four hundred twenty-one million, seven hundred four thousand, two hundred ninety-seven".