423012021 has 8 divisors (see below), whose sum is σ = 588538560. Its totient is φ = 269746752.

The previous prime is 423012017. The next prime is 423012041. The reversal of 423012021 is 120210324.

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

It is not a de Polignac number, because 423012021 - 2² = 423012017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423012001) 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, 3065236 + ... + 3065373.

It is an arithmetic number, because the mean of its divisors is an integer number (73567320).

Almost surely, 2^423012021 is an apocalyptic number.

It is an amenable number.

423012021 is a deficient number, since it is larger than the sum of its proper divisors (165526539).

423012021 is a wasteful number, since it uses less digits than its factorization.

423012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6130635.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 423012021 is about 20567.2560396374. The cubic root of 423012021 is about 750.6731858026.

Adding to 423012021 its reverse (120210324), we get a palindrome (543222345).

The spelling of 423012021 in words is "four hundred twenty-three million, twelve thousand, twenty-one".