74241281 has 2 divisors, whose sum is σ = 74241282. Its totient is φ = 74241280.

The previous prime is 74241269. The next prime is 74241289. The reversal of 74241281 is 18214247.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52998400 + 21242881 = 7280^2 + 4609^2 .

It is an emirp because it is prime and its reverse (18214247) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74241281 - 2¹⁴ = 74224897 is a prime.

It is a super-2 number, since 2×74241281² = 11023535609041922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (74241289) 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, 37120640 + 37120641.

It is an arithmetic number, because the mean of its divisors is an integer number (37120641).

Almost surely, 2^74241281 is an apocalyptic number.

It is an amenable number.

74241281 is a deficient number, since it is larger than the sum of its proper divisors (1).

74241281 is an equidigital number, since it uses as much as digits as its factorization.

74241281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3584, while the sum is 29.

The square root of 74241281 is about 8616.3380272596. The cubic root of 74241281 is about 420.2894471153.

The spelling of 74241281 in words is "seventy-four million, two hundred forty-one thousand, two hundred eighty-one".