74943143 has 4 divisors (see below), whose sum is σ = 81756168. Its totient is φ = 68130120.

The previous prime is 74943139. The next prime is 74943173. The reversal of 74943143 is 34134947.

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 74943143 - 2² = 74943139 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 (74943103) 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, 3406496 + ... + 3406517.

It is an arithmetic number, because the mean of its divisors is an integer number (20439042).

Almost surely, 2^74943143 is an apocalyptic number.

74943143 is a deficient number, since it is larger than the sum of its proper divisors (6813025).

74943143 is a wasteful number, since it uses less digits than its factorization.

74943143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6813024.

The product of its digits is 36288, while the sum is 35.

The square root of 74943143 is about 8656.9707750460. The cubic root of 74943143 is about 421.6097389302.

The spelling of 74943143 in words is "seventy-four million, nine hundred forty-three thousand, one hundred forty-three".