74245239 has 12 divisors (see below), whose sum is σ = 113551776. Its totient is φ = 46585152.

The previous prime is 74245207. The next prime is 74245253. The reversal of 74245239 is 93254247.

It is not a de Polignac number, because 74245239 - 2⁵ = 74245207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74245139) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 242479 + ... + 242784.

It is an arithmetic number, because the mean of its divisors is an integer number (9462648).

Almost surely, 2^74245239 is an apocalyptic number.

74245239 is a deficient number, since it is larger than the sum of its proper divisors (39306537).

74245239 is a wasteful number, since it uses less digits than its factorization.

74245239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485286 (or 485283 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 74245239 is about 8616.5677041383. The cubic root of 74245239 is about 420.2969158984.

The spelling of 74245239 in words is "seventy-four million, two hundred forty-five thousand, two hundred thirty-nine".