74384243 has 2 divisors, whose sum is σ = 74384244. Its totient is φ = 74384242.

The previous prime is 74384213. The next prime is 74384249. The reversal of 74384243 is 34248347.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74384243 - 2¹⁴ = 74367859 is a prime.

It is not a weakly prime, because it can be changed into another prime (74384249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37192121 + 37192122.

It is an arithmetic number, because the mean of its divisors is an integer number (37192122).

Almost surely, 2^74384243 is an apocalyptic number.

74384243 is a deficient number, since it is larger than the sum of its proper divisors (1).

74384243 is an equidigital number, since it uses as much as digits as its factorization.

74384243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 35.

The square root of 74384243 is about 8624.6300210502. The cubic root of 74384243 is about 420.5590495642.

The spelling of 74384243 in words is "seventy-four million, three hundred eighty-four thousand, two hundred forty-three".