423012421 has 8 divisors (see below), whose sum is σ = 455818104. Its totient is φ = 390244800.

The previous prime is 423012413. The next prime is 423012431. The reversal of 423012421 is 124210324.

It can be written as a sum of positive squares in 4 ways, for example, as 72012196 + 351000225 = 8486^2 + 18735^2 .

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 423012421 - 2³ = 423012413 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 (423012431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16155 + ... + 33271.

It is an arithmetic number, because the mean of its divisors is an integer number (56977263).

Almost surely, 2^423012421 is an apocalyptic number.

It is an amenable number.

423012421 is a deficient number, since it is larger than the sum of its proper divisors (32805683).

423012421 is a wasteful number, since it uses less digits than its factorization.

423012421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19031.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 423012421 is about 20567.2657638297. The cubic root of 423012421 is about 750.6734224146.

Adding to 423012421 its reverse (124210324), we get a palindrome (547222745).

The spelling of 423012421 in words is "four hundred twenty-three million, twelve thousand, four hundred twenty-one".