20232421 has 8 divisors (see below), whose sum is σ = 22291488. Its totient is φ = 18210000.

The previous prime is 20232413. The next prime is 20232427. The reversal of 20232421 is 12423202.

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 20232421 - 2³ = 20232413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20232395 and 20232404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20232427) 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, 7995 + ... + 10216.

It is an arithmetic number, because the mean of its divisors is an integer number (2786436).

Almost surely, 2^20232421 is an apocalyptic number.

It is an amenable number.

20232421 is a deficient number, since it is larger than the sum of its proper divisors (2059067).

20232421 is a wasteful number, since it uses less digits than its factorization.

20232421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18323.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 20232421 is about 4498.0463536962. The cubic root of 20232421 is about 272.4891940837.

Adding to 20232421 its reverse (12423202), we get a palindrome (32655623).

It can be divided in two parts, 2023 and 2421, that added together give a palindrome (4444).

The spelling of 20232421 in words is "twenty million, two hundred thirty-two thousand, four hundred twenty-one".