423821201 has 16 divisors (see below), whose sum is σ = 457923840. Its totient is φ = 390957840.

The previous prime is 423821197. The next prime is 423821219. The reversal of 423821201 is 102128324.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 423821201 - 2² = 423821197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423821221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 361346 + ... + 362516.

It is an arithmetic number, because the mean of its divisors is an integer number (28620240).

Almost surely, 2^423821201 is an apocalyptic number.

It is an amenable number.

423821201 is a deficient number, since it is larger than the sum of its proper divisors (34102639).

423821201 is a wasteful number, since it uses less digits than its factorization.

423821201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1676.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 423821201 is about 20586.9182006438. The cubic root of 423821201 is about 751.1515353465.

Adding to 423821201 its reverse (102128324), we get a palindrome (525949525).

The spelling of 423821201 in words is "four hundred twenty-three million, eight hundred twenty-one thousand, two hundred one".