23412421 has 2 divisors, whose sum is σ = 23412422. Its totient is φ = 23412420.

The previous prime is 23412419. The next prime is 23412449. The reversal of 23412421 is 12421432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23328900 + 83521 = 4830^2 + 289^2 .

It is a cyclic number.

It is not a de Polignac number, because 23412421 - 2¹ = 23412419 is a prime.

Together with 23412419, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23412461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11706210 + 11706211.

It is an arithmetic number, because the mean of its divisors is an integer number (11706211).

Almost surely, 2^23412421 is an apocalyptic number.

It is an amenable number.

23412421 is a deficient number, since it is larger than the sum of its proper divisors (1).

23412421 is an equidigital number, since it uses as much as digits as its factorization.

23412421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 384, while the sum is 19.

The square root of 23412421 is about 4838.6383415172. The cubic root of 23412421 is about 286.0764502944.

Adding to 23412421 its reverse (12421432), we get a palindrome (35833853).

The spelling of 23412421 in words is "twenty-three million, four hundred twelve thousand, four hundred twenty-one".