24051421 has 2 divisors, whose sum is σ = 24051422. Its totient is φ = 24051420.

The previous prime is 24051389. The next prime is 24051437. The reversal of 24051421 is 12415042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15319396 + 8732025 = 3914^2 + 2955^2 .

It is a cyclic number.

It is not a de Polignac number, because 24051421 - 2⁵ = 24051389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24021421) 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, 12025710 + 12025711.

It is an arithmetic number, because the mean of its divisors is an integer number (12025711).

Almost surely, 2^24051421 is an apocalyptic number.

It is an amenable number.

24051421 is a deficient number, since it is larger than the sum of its proper divisors (1).

24051421 is an equidigital number, since it uses as much as digits as its factorization.

24051421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 24051421 is about 4904.2248113234. The cubic root of 24051421 is about 288.6557724312.

Adding to 24051421 its reverse (12415042), we get a palindrome (36466463).

The spelling of 24051421 in words is "twenty-four million, fifty-one thousand, four hundred twenty-one".