24909121 has 2 divisors, whose sum is σ = 24909122. Its totient is φ = 24909120.

The previous prime is 24909119. The next prime is 24909139. The reversal of 24909121 is 12190942.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24403600 + 505521 = 4940^2 + 711^2 .

It is a cyclic number.

It is not a de Polignac number, because 24909121 - 2¹ = 24909119 is a prime.

Together with 24909119, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 24909121.

It is not a weakly prime, because it can be changed into another prime (24909421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12454560 + 12454561.

It is an arithmetic number, because the mean of its divisors is an integer number (12454561).

Almost surely, 2^24909121 is an apocalyptic number.

It is an amenable number.

24909121 is a deficient number, since it is larger than the sum of its proper divisors (1).

24909121 is an equidigital number, since it uses as much as digits as its factorization.

24909121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 24909121 is about 4990.9038259618. The cubic root of 24909121 is about 292.0470345514.

It can be divided in two parts, 2490 and 9121, that added together give a palindrome (11611).

The spelling of 24909121 in words is "twenty-four million, nine hundred nine thousand, one hundred twenty-one".