423534221 has 8 divisors (see below), whose sum is σ = 462473184. Its totient is φ = 384667920.

The previous prime is 423534217. The next prime is 423534229. The reversal of 423534221 is 122435324.

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

It is a cyclic number.

It is not a de Polignac number, because 423534221 - 2² = 423534217 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 (423534229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5591 + ... + 29636.

It is an arithmetic number, because the mean of its divisors is an integer number (57809148).

Almost surely, 2^423534221 is an apocalyptic number.

It is an amenable number.

423534221 is a deficient number, since it is larger than the sum of its proper divisors (38938963).

423534221 is a wasteful number, since it uses less digits than its factorization.

423534221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36331.

The product of its digits is 5760, while the sum is 26.

The square root of 423534221 is about 20579.9470601846. The cubic root of 423534221 is about 750.9819558632.

Adding to 423534221 its reverse (122435324), we get a palindrome (545969545).

The spelling of 423534221 in words is "four hundred twenty-three million, five hundred thirty-four thousand, two hundred twenty-one".