74105243 has 2 divisors, whose sum is σ = 74105244. Its totient is φ = 74105242.

The previous prime is 74105231. The next prime is 74105249. The reversal of 74105243 is 34250147.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74105243 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (74105249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37052621 + 37052622.

It is an arithmetic number, because the mean of its divisors is an integer number (37052622).

Almost surely, 2^74105243 is an apocalyptic number.

74105243 is a deficient number, since it is larger than the sum of its proper divisors (1).

74105243 is an equidigital number, since it uses as much as digits as its factorization.

74105243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 74105243 is about 8608.4402187620. The cubic root of 74105243 is about 420.0325806169.

The spelling of 74105243 in words is "seventy-four million, one hundred five thousand, two hundred forty-three".