423225021 has 8 divisors (see below), whose sum is σ = 564395104. Its totient is φ = 282102480.

The previous prime is 423225017. The next prime is 423225029. The reversal of 423225021 is 120522324.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 423225021 - 2² = 423225017 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 (423225029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28335 + ... + 40611.

It is an arithmetic number, because the mean of its divisors is an integer number (70549388).

Almost surely, 2^423225021 is an apocalyptic number.

It is an amenable number.

423225021 is a deficient number, since it is larger than the sum of its proper divisors (141170083).

423225021 is a wasteful number, since it uses less digits than its factorization.

423225021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23771.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 423225021 is about 20572.4335215842. The cubic root of 423225021 is about 750.7991605984.

Adding to 423225021 its reverse (120522324), we get a palindrome (543747345).

The spelling of 423225021 in words is "four hundred twenty-three million, two hundred twenty-five thousand, twenty-one".