74123243 has 2 divisors, whose sum is σ = 74123244. Its totient is φ = 74123242.

The previous prime is 74123209. The next prime is 74123267. The reversal of 74123243 is 34232147.

It is a strong prime.

It is an emirp because it is prime and its reverse (34232147) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74123243 - 2¹² = 74119147 is a prime.

It is not a weakly prime, because it can be changed into another prime (74123143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37061621 + 37061622.

It is an arithmetic number, because the mean of its divisors is an integer number (37061622).

Almost surely, 2^74123243 is an apocalyptic number.

74123243 is a deficient number, since it is larger than the sum of its proper divisors (1).

74123243 is an equidigital number, since it uses as much as digits as its factorization.

74123243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 26.

The square root of 74123243 is about 8609.4856408499. The cubic root of 74123243 is about 420.0665861928.

The spelling of 74123243 in words is "seventy-four million, one hundred twenty-three thousand, two hundred forty-three".