23541421 has 4 divisors (see below), whose sum is σ = 24115644. Its totient is φ = 22967200.

The previous prime is 23541409. The next prime is 23541467. The reversal of 23541421 is 12414532.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2280100 + 21261321 = 1510^2 + 4611^2 .

It is a cyclic number.

It is not a de Polignac number, because 23541421 - 2⁵ = 23541389 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23541392 and 23541401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23541491) 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, 287050 + ... + 287131.

It is an arithmetic number, because the mean of its divisors is an integer number (6028911).

Almost surely, 2^23541421 is an apocalyptic number.

It is an amenable number.

23541421 is a deficient number, since it is larger than the sum of its proper divisors (574223).

23541421 is an equidigital number, since it uses as much as digits as its factorization.

23541421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574222.

The product of its digits is 960, while the sum is 22.

The square root of 23541421 is about 4851.9502264553. The cubic root of 23541421 is about 286.6009053830.

Adding to 23541421 its reverse (12414532), we get a palindrome (35955953).

The spelling of 23541421 in words is "twenty-three million, five hundred forty-one thousand, four hundred twenty-one".