23442621 has 4 divisors (see below), whose sum is σ = 31256832. Its totient is φ = 15628412.

The previous prime is 23442619. The next prime is 23442623. The reversal of 23442621 is 12624432.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (23442619) and next prime (23442623).

It is a cyclic number.

It is not a de Polignac number, because 23442621 - 2¹ = 23442619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23442591 and 23442600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23442623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3907101 + ... + 3907106.

It is an arithmetic number, because the mean of its divisors is an integer number (7814208).

Almost surely, 2^23442621 is an apocalyptic number.

It is an amenable number.

23442621 is a deficient number, since it is larger than the sum of its proper divisors (7814211).

23442621 is an equidigital number, since it uses as much as digits as its factorization.

23442621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7814210.

The product of its digits is 2304, while the sum is 24.

The square root of 23442621 is about 4841.7580484778. The cubic root of 23442621 is about 286.1994020774.

The spelling of 23442621 in words is "twenty-three million, four hundred forty-two thousand, six hundred twenty-one".