23345421 has 8 divisors (see below), whose sum is σ = 33957024. Its totient is φ = 14148720.

The previous prime is 23345407. The next prime is 23345447. The reversal of 23345421 is 12454332.

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

It is not a de Polignac number, because 23345421 - 2⁵ = 23345389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23345391 and 23345400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23345321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353686 + ... + 353751.

It is an arithmetic number, because the mean of its divisors is an integer number (4244628).

Almost surely, 2^23345421 is an apocalyptic number.

It is an amenable number.

23345421 is a deficient number, since it is larger than the sum of its proper divisors (10611603).

23345421 is a wasteful number, since it uses less digits than its factorization.

23345421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707451.

The product of its digits is 2880, while the sum is 24.

The square root of 23345421 is about 4831.7099457645. The cubic root of 23345421 is about 285.8032984918.

Adding to 23345421 its reverse (12454332), we get a palindrome (35799753).

It can be divided in two parts, 233 and 45421, that added together give a palindrome (45654).

The spelling of 23345421 in words is "twenty-three million, three hundred forty-five thousand, four hundred twenty-one".