23416421 has 8 divisors (see below), whose sum is σ = 26820480. Its totient is φ = 20027088.

The previous prime is 23416411. The next prime is 23416423. The reversal of 23416421 is 12461432.

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 23416421 - 2¹⁰ = 23415397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23416423) 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, 26 + ... + 6843.

It is an arithmetic number, because the mean of its divisors is an integer number (3352560).

Almost surely, 2^23416421 is an apocalyptic number.

It is an amenable number.

23416421 is a deficient number, since it is larger than the sum of its proper divisors (3404059).

23416421 is an equidigital number, since it uses as much as digits as its factorization.

23416421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7363.

The product of its digits is 1152, while the sum is 23.

The square root of 23416421 is about 4839.0516632911. The cubic root of 23416421 is about 286.0927413711.

Adding to 23416421 its reverse (12461432), we get a palindrome (35877853).

The spelling of 23416421 in words is "twenty-three million, four hundred sixteen thousand, four hundred twenty-one".