423602221 has 4 divisors (see below), whose sum is σ = 484116832. Its totient is φ = 363087612.

The previous prime is 423602191. The next prime is 423602227. The reversal of 423602221 is 122206324.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 423602221 - 2⁵ = 423602189 is a prime.

It is a super-2 number, since 2×423602221² = 358877683272265682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 423602192 and 423602201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423602227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30257295 + ... + 30257308.

It is an arithmetic number, because the mean of its divisors is an integer number (121029208).

Almost surely, 2^423602221 is an apocalyptic number.

It is an amenable number.

423602221 is a deficient number, since it is larger than the sum of its proper divisors (60514611).

423602221 is an equidigital number, since it uses as much as digits as its factorization.

423602221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60514610.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 423602221 is about 20581.5990875345. The cubic root of 423602221 is about 751.0221446978.

Adding to 423602221 its reverse (122206324), we get a palindrome (545808545).

The spelling of 423602221 in words is "four hundred twenty-three million, six hundred two thousand, two hundred twenty-one".