74418143 has 4 divisors (see below), whose sum is σ = 74438280. Its totient is φ = 74398008.

The previous prime is 74418121. The next prime is 74418161. The reversal of 74418143 is 34181447.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34181447 = 73 ⋅468239.

It is a cyclic number.

It is not a de Polignac number, because 74418143 - 2²⁶ = 7309279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74411143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2753 + ... + 12506.

It is an arithmetic number, because the mean of its divisors is an integer number (18609570).

Almost surely, 2^74418143 is an apocalyptic number.

74418143 is a deficient number, since it is larger than the sum of its proper divisors (20137).

74418143 is a wasteful number, since it uses less digits than its factorization.

74418143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20136.

The product of its digits is 10752, while the sum is 32.

The square root of 74418143 is about 8626.5950988788. The cubic root of 74418143 is about 420.6229286239.

The spelling of 74418143 in words is "seventy-four million, four hundred eighteen thousand, one hundred forty-three".