423323121 has 16 divisors (see below), whose sum is σ = 628810560. Its totient is φ = 251522880.

The previous prime is 423323113. The next prime is 423323129. The reversal of 423323121 is 121323324.

It is an interprime number because it is at equal distance from previous prime (423323113) and next prime (423323129).

It is not a de Polignac number, because 423323121 - 2³ = 423323113 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (423323129) 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 15 ways as a sum of consecutive naturals, for example, 186015 + ... + 188276.

It is an arithmetic number, because the mean of its divisors is an integer number (39300660).

Almost surely, 2^423323121 is an apocalyptic number.

It is an amenable number.

423323121 is a deficient number, since it is larger than the sum of its proper divisors (205487439).

423323121 is a wasteful number, since it uses less digits than its factorization.

423323121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374336.

The product of its digits is 864, while the sum is 21.

The square root of 423323121 is about 20574.8176419622. The cubic root of 423323121 is about 750.8571657604.

Adding to 423323121 its reverse (121323324), we get a palindrome (544646445).

The spelling of 423323121 in words is "four hundred twenty-three million, three hundred twenty-three thousand, one hundred twenty-one".