421715471 has 4 divisors (see below), whose sum is σ = 421843944. Its totient is φ = 421587000.

The previous prime is 421715467. The next prime is 421715473. The reversal of 421715471 is 174517124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 421715471 - 2² = 421715467 is a prime.

It is a super-3 number, since 3×421715471³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421715473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59180 + ... + 65921.

It is an arithmetic number, because the mean of its divisors is an integer number (105460986).

Almost surely, 2^421715471 is an apocalyptic number.

421715471 is a deficient number, since it is larger than the sum of its proper divisors (128473).

421715471 is a wasteful number, since it uses less digits than its factorization.

421715471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128472.

The product of its digits is 7840, while the sum is 32.

The square root of 421715471 is about 20535.7120889440. The cubic root of 421715471 is about 749.9054523778.

The spelling of 421715471 in words is "four hundred twenty-one million, seven hundred fifteen thousand, four hundred seventy-one".