421323125 has 10 divisors (see below), whose sum is σ = 526486158. Its totient is φ = 337058000.

The previous prime is 421323109. The next prime is 421323127. The reversal of 421323125 is 521323124.

It can be written as a sum of positive squares in 5 ways, for example, as 111809476 + 309513649 = 10574^2 + 17593^2 .

It is not a de Polignac number, because 421323125 - 2⁴ = 421323109 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 421323125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421323127) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 336434 + ... + 337683.

Almost surely, 2^421323125 is an apocalyptic number.

It is an amenable number.

421323125 is a deficient number, since it is larger than the sum of its proper divisors (105163033).

421323125 is an frugal number, since it uses more digits than its factorization.

421323125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674137 (or 674122 counting only the distinct ones).

The product of its digits is 1440, while the sum is 23.

The square root of 421323125 is about 20526.1570928413. The cubic root of 421323125 is about 749.6728202549.

Adding to 421323125 its reverse (521323124), we get a palindrome (942646249).

Subtracting 421323125 from its reverse (521323124), we obtain a palindrome (99999999).

The spelling of 421323125 in words is "four hundred twenty-one million, three hundred twenty-three thousand, one hundred twenty-five".