74242339 has 2 divisors, whose sum is σ = 74242340. Its totient is φ = 74242338.

The previous prime is 74242331. The next prime is 74242361. The reversal of 74242339 is 93324247.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74242339 - 2³ = 74242331 is a prime.

It is not a weakly prime, because it can be changed into another prime (74242331) 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, 37121169 + 37121170.

It is an arithmetic number, because the mean of its divisors is an integer number (37121170).

Almost surely, 2^74242339 is an apocalyptic number.

74242339 is a deficient number, since it is larger than the sum of its proper divisors (1).

74242339 is an equidigital number, since it uses as much as digits as its factorization.

74242339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 34.

The square root of 74242339 is about 8616.3994220324. The cubic root of 74242339 is about 420.2914435972.

The spelling of 74242339 in words is "seventy-four million, two hundred forty-two thousand, three hundred thirty-nine".