23121424 has 20 divisors (see below), whose sum is σ = 44886636. Its totient is φ = 11537792.

The previous prime is 23121421. The next prime is 23121431. The reversal of 23121424 is 42412132.

It can be written as a sum of positive squares in 2 ways, for example, as 16257024 + 6864400 = 4032^2 + 2620^2 .

It is not an unprimeable number, because it can be changed into a prime (23121421) 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, 9342 + ... + 11554.

Almost surely, 2^23121424 is an apocalyptic number.

It is an amenable number.

23121424 is a deficient number, since it is larger than the sum of its proper divisors (21765212).

23121424 is a wasteful number, since it uses less digits than its factorization.

23121424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2874 (or 2868 counting only the distinct ones).

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

The square root of 23121424 is about 4808.4741862674. The cubic root of 23121424 is about 284.8862745187.

Adding to 23121424 its reverse (42412132), we get a palindrome (65533556).

The spelling of 23121424 in words is "twenty-three million, one hundred twenty-one thousand, four hundred twenty-four".