74145 has 8 divisors (see below), whose sum is σ = 118656. Its totient is φ = 39536.

The previous prime is 74143. The next prime is 74149. The reversal of 74145 is 54147.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74145 - 2¹ = 74143 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (74143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2457 + ... + 2486.

It is an arithmetic number, because the mean of its divisors is an integer number (14832).

2⁷⁴¹⁴⁵ is an apocalyptic number.

It is an amenable number.

74145 is a deficient number, since it is larger than the sum of its proper divisors (44511).

74145 is a wasteful number, since it uses less digits than its factorization.

74145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4951.

The product of its digits is 560, while the sum is 21.

The square root of 74145 is about 272.2957950465. The cubic root of 74145 is about 42.0107682140.

The spelling of 74145 in words is "seventy-four thousand, one hundred forty-five".