423541221 has 8 divisors (see below), whose sum is σ = 567085440. Its totient is φ = 281178912.

The previous prime is 423541207. The next prime is 423541231. The reversal of 423541221 is 122145324.

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

It is not a de Polignac number, because 423541221 - 2¹³ = 423533029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 423541191 and 423541200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423541231) 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, 294640 + ... + 296073.

It is an arithmetic number, because the mean of its divisors is an integer number (70885680).

Almost surely, 2^423541221 is an apocalyptic number.

It is an amenable number.

423541221 is a deficient number, since it is larger than the sum of its proper divisors (143544219).

423541221 is a wasteful number, since it uses less digits than its factorization.

423541221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590955.

The product of its digits is 1920, while the sum is 24.

The square root of 423541221 is about 20580.1171279466. The cubic root of 423541221 is about 750.9860931477.

Adding to 423541221 its reverse (122145324), we get a palindrome (545686545).

The spelling of 423541221 in words is "four hundred twenty-three million, five hundred forty-one thousand, two hundred twenty-one".