74123539 has 4 divisors (see below), whose sum is σ = 84712624. Its totient is φ = 63534456.

The previous prime is 74123537. The next prime is 74123603. The reversal of 74123539 is 93532147.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 74123539 - 2¹ = 74123537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74123537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5294532 + ... + 5294545.

It is an arithmetic number, because the mean of its divisors is an integer number (21178156).

Almost surely, 2^74123539 is an apocalyptic number.

74123539 is a deficient number, since it is larger than the sum of its proper divisors (10589085).

74123539 is a wasteful number, since it uses less digits than its factorization.

74123539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10589084.

The product of its digits is 22680, while the sum is 34.

The square root of 74123539 is about 8609.5028311744. The cubic root of 74123539 is about 420.0671453496.

The spelling of 74123539 in words is "seventy-four million, one hundred twenty-three thousand, five hundred thirty-nine".