421106065 has 32 divisors (see below), whose sum is σ = 552710304. Its totient is φ = 306708480.

The previous prime is 421106051. The next prime is 421106083. The reversal of 421106065 is 560601124.

421106065 is nontrivially palindromic in base 16.

421106065 is an esthetic number in base 4, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in 16 ways, for example, as 7268416 + 413837649 = 2696^2 + 20343^2 .

It is not a de Polignac number, because 421106065 - 2⁵ = 421106033 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 808005 + ... + 808525.

It is an arithmetic number, because the mean of its divisors is an integer number (17272197).

Almost surely, 2^421106065 is an apocalyptic number.

It is an amenable number.

421106065 is a deficient number, since it is larger than the sum of its proper divisors (131604239).

421106065 is a wasteful number, since it uses less digits than its factorization.

421106065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 421106065 is about 20520.8690118133. The cubic root of 421106065 is about 749.5440576931.

Adding to 421106065 its reverse (560601124), we get a palindrome (981707189).

The spelling of 421106065 in words is "four hundred twenty-one million, one hundred six thousand, sixty-five".