74042745 has 16 divisors (see below), whose sum is σ = 135392640. Its totient is φ = 33848064.

The previous prime is 74042743. The next prime is 74042779. The reversal of 74042745 is 54724047.

It is not a de Polignac number, because 74042745 - 2¹ = 74042743 is a prime.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (74042743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 352480 + ... + 352689.

It is an arithmetic number, because the mean of its divisors is an integer number (8462040).

Almost surely, 2^74042745 is an apocalyptic number.

It is an amenable number.

74042745 is a deficient number, since it is larger than the sum of its proper divisors (61349895).

74042745 is a wasteful number, since it uses less digits than its factorization.

74042745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705184.

The product of its (nonzero) digits is 31360, while the sum is 33.

The square root of 74042745 is about 8604.8094110213. The cubic root of 74042745 is about 419.9144667093.

The spelling of 74042745 in words is "seventy-four million, forty-two thousand, seven hundred forty-five".