420938125 has 30 divisors (see below), whose sum is σ = 537723186. Its totient is φ = 329400000.

The previous prime is 420938123. The next prime is 420938129. The reversal of 420938125 is 521839024.

It can be written as a sum of positive squares in 15 ways, for example, as 189502756 + 231435369 = 13766^2 + 15213^2 .

It is not a de Polignac number, because 420938125 - 2¹ = 420938123 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420938123) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 2325535 + ... + 2325715.

Almost surely, 2^420938125 is an apocalyptic number.

It is an amenable number.

420938125 is a deficient number, since it is larger than the sum of its proper divisors (116785061).

420938125 is an frugal number, since it uses more digits than its factorization.

420938125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323 (or 247 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 420938125 is about 20516.7766717874. The cubic root of 420938125 is about 749.4444033329. Note that the first 4 decimals are identical.

The spelling of 420938125 in words is "four hundred twenty million, nine hundred thirty-eight thousand, one hundred twenty-five".