24021281 has 2 divisors, whose sum is σ = 24021282. Its totient is φ = 24021280.

The previous prime is 24021271. The next prime is 24021287. The reversal of 24021281 is 18212042.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19360000 + 4661281 = 4400^2 + 2159^2 .

It is a cyclic number.

It is not a de Polignac number, because 24021281 - 2¹⁸ = 23759137 is a prime.

It is a super-2 number, since 2×24021281² = 1154043881761922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (24021287) 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, 12010640 + 12010641.

It is an arithmetic number, because the mean of its divisors is an integer number (12010641).

Almost surely, 2^24021281 is an apocalyptic number.

It is an amenable number.

24021281 is a deficient number, since it is larger than the sum of its proper divisors (1).

24021281 is an equidigital number, since it uses as much as digits as its factorization.

24021281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 24021281 is about 4901.1509872682. The cubic root of 24021281 is about 288.5351458554.

The spelling of 24021281 in words is "twenty-four million, twenty-one thousand, two hundred eighty-one".