24640243 has 2 divisors, whose sum is σ = 24640244. Its totient is φ = 24640242.

The previous prime is 24640241. The next prime is 24640249. The reversal of 24640243 is 34204642.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 24640243 - 2¹ = 24640241 is a prime.

Together with 24640241, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (24640241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12320121 + 12320122.

It is an arithmetic number, because the mean of its divisors is an integer number (12320122).

Almost surely, 2^24640243 is an apocalyptic number.

24640243 is a deficient number, since it is larger than the sum of its proper divisors (1).

24640243 is an equidigital number, since it uses as much as digits as its factorization.

24640243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 24640243 is about 4963.8939352085. The cubic root of 24640243 is about 290.9924105357.

Adding to 24640243 its reverse (34204642), we get a palindrome (58844885).

The spelling of 24640243 in words is "twenty-four million, six hundred forty thousand, two hundred forty-three".