24040421 has 2 divisors, whose sum is σ = 24040422. Its totient is φ = 24040420.

The previous prime is 24040403. The next prime is 24040441. The reversal of 24040421 is 12404042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14737921 + 9302500 = 3839^2 + 3050^2 .

It is a cyclic number.

It is not a de Polignac number, because 24040421 - 2¹⁰ = 24039397 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 24040421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24040441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12020210 + 12020211.

It is an arithmetic number, because the mean of its divisors is an integer number (12020211).

Almost surely, 2^24040421 is an apocalyptic number.

It is an amenable number.

24040421 is a deficient number, since it is larger than the sum of its proper divisors (1).

24040421 is an equidigital number, since it uses as much as digits as its factorization.

24040421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 24040421 is about 4903.1032010350. The cubic root of 24040421 is about 288.6117598178.

Adding to 24040421 its reverse (12404042), we get a palindrome (36444463).

The spelling of 24040421 in words is "twenty-four million, forty thousand, four hundred twenty-one".