421711005 has 16 divisors (see below), whose sum is σ = 678167424. Its totient is φ = 223769280.

The previous prime is 421710997. The next prime is 421711007. The reversal of 421711005 is 500117124.

It is a happy number.

421711005 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 421711005 - 2³ = 421710997 is a prime.

It is a super-2 number, since 2×421711005² = 355680343476220050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421711007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68401 + ... + 74310.

It is an arithmetic number, because the mean of its divisors is an integer number (42385464).

Almost surely, 2^421711005 is an apocalyptic number.

It is an amenable number.

421711005 is a deficient number, since it is larger than the sum of its proper divisors (256456419).

421711005 is a wasteful number, since it uses less digits than its factorization.

421711005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142916.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 421711005 is about 20535.6033512532. The cubic root of 421711005 is about 749.9028051825.

Adding to 421711005 its reverse (500117124), we get a palindrome (921828129).

The spelling of 421711005 in words is "four hundred twenty-one million, seven hundred eleven thousand, five".