74413243 has 2 divisors, whose sum is σ = 74413244. Its totient is φ = 74413242.

The previous prime is 74413231. The next prime is 74413247. The reversal of 74413243 is 34231447.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74413243 is a prime.

It is not a weakly prime, because it can be changed into another prime (74413247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37206621 + 37206622.

It is an arithmetic number, because the mean of its divisors is an integer number (37206622).

Almost surely, 2^74413243 is an apocalyptic number.

74413243 is a deficient number, since it is larger than the sum of its proper divisors (1).

74413243 is an equidigital number, since it uses as much as digits as its factorization.

74413243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 28.

The square root of 74413243 is about 8626.3110887563. The cubic root of 74413243 is about 420.6136965671.

The spelling of 74413243 in words is "seventy-four million, four hundred thirteen thousand, two hundred forty-three".