12023421 has 8 divisors (see below), whose sum is σ = 16333920. Its totient is φ = 7864272.

The previous prime is 12023419. The next prime is 12023461. The reversal of 12023421 is 12432021.

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

It is not a de Polignac number, because 12023421 - 2¹ = 12023419 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12023421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12023461) 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, 37651 + ... + 37968.

It is an arithmetic number, because the mean of its divisors is an integer number (2041740).

Almost surely, 2^12023421 is an apocalyptic number.

It is an amenable number.

12023421 is a deficient number, since it is larger than the sum of its proper divisors (4310499).

12023421 is an equidigital number, since it uses as much as digits as its factorization.

12023421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75675.

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

The square root of 12023421 is about 3467.4804974217. The cubic root of 12023421 is about 229.0916981151.

Adding to 12023421 its reverse (12432021), we get a palindrome (24455442).

The spelling of 12023421 in words is "twelve million, twenty-three thousand, four hundred twenty-one".