24099421 has 6 divisors (see below), whose sum is σ = 25600730. Its totient is φ = 22681536.

The previous prime is 24099401. The next prime is 24099437. The reversal of 24099421 is 12499042.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 9765625 + 14333796 = 3125^2 + 3786^2 .

It is not a de Polignac number, because 24099421 - 2⁵ = 24099389 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 (24099401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 41406 + ... + 41983.

Almost surely, 2^24099421 is an apocalyptic number.

It is an amenable number.

24099421 is a deficient number, since it is larger than the sum of its proper divisors (1501309).

24099421 is an equidigital number, since it uses as much as digits as its factorization.

24099421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83423 (or 83406 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 24099421 is about 4909.1161118882. The cubic root of 24099421 is about 288.8476705876.

The spelling of 24099421 in words is "twenty-four million, ninety-nine thousand, four hundred twenty-one".