421185471 has 32 divisors (see below), whose sum is σ = 657745920. Its totient is φ = 234736896.

The previous prime is 421185463. The next prime is 421185481. The reversal of 421185471 is 174581124.

It is not a de Polignac number, because 421185471 - 2³ = 421185463 is a prime.

It is a super-3 number, since 3×421185471³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421185431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 383395 + ... + 384491.

It is an arithmetic number, because the mean of its divisors is an integer number (20554560).

Almost surely, 2^421185471 is an apocalyptic number.

421185471 is a deficient number, since it is larger than the sum of its proper divisors (236560449).

421185471 is a wasteful number, since it uses less digits than its factorization.

421185471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1543.

The product of its digits is 8960, while the sum is 33.

The square root of 421185471 is about 20522.8036827330. The cubic root of 421185471 is about 749.5911674039.

The spelling of 421185471 in words is "four hundred twenty-one million, one hundred eighty-five thousand, four hundred seventy-one".