24132421 has 2 divisors, whose sum is σ = 24132422. Its totient is φ = 24132420.

The previous prime is 24132419. The next prime is 24132443. The reversal of 24132421 is 12423142.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23961025 + 171396 = 4895^2 + 414^2 .

It is a cyclic number.

It is not a de Polignac number, because 24132421 - 2¹ = 24132419 is a prime.

Together with 24132419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24132461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12066210 + 12066211.

It is an arithmetic number, because the mean of its divisors is an integer number (12066211).

Almost surely, 2^24132421 is an apocalyptic number.

It is an amenable number.

24132421 is a deficient number, since it is larger than the sum of its proper divisors (1).

24132421 is an equidigital number, since it uses as much as digits as its factorization.

24132421 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 24132421 is about 4912.4760559213. The cubic root of 24132421 is about 288.9794528082.

Adding to 24132421 its reverse (12423142), we get a palindrome (36555563).

The spelling of 24132421 in words is "twenty-four million, one hundred thirty-two thousand, four hundred twenty-one".