423121225 has 24 divisors (see below), whose sum is σ = 549464832. Its totient is φ = 322608000.

The previous prime is 423121217. The next prime is 423121229. The reversal of 423121225 is 522121324.

It is a happy number.

It is not a de Polignac number, because 423121225 - 2³ = 423121217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 423121196 and 423121205.

It is not an unprimeable number, because it can be changed into a prime (423121229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 178800 + ... + 181150.

It is an arithmetic number, because the mean of its divisors is an integer number (22894368).

Almost surely, 2^423121225 is an apocalyptic number.

It is an amenable number.

423121225 is a deficient number, since it is larger than the sum of its proper divisors (126343607).

423121225 is a wasteful number, since it uses less digits than its factorization.

423121225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2697 (or 2692 counting only the distinct ones).

The product of its digits is 960, while the sum is 22.

The square root of 423121225 is about 20569.9106706860. The cubic root of 423121225 is about 750.7377777111.

Adding to 423121225 its reverse (522121324), we get a palindrome (945242549).

Subtracting 423121225 from its reverse (522121324), we obtain a palindrome (99000099).

The spelling of 423121225 in words is "four hundred twenty-three million, one hundred twenty-one thousand, two hundred twenty-five".