74643043 has 4 divisors (see below), whose sum is σ = 74677680. Its totient is φ = 74608408.

The previous prime is 74643031. The next prime is 74643061. The reversal of 74643043 is 34034647.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34034647 = 491 ⋅69317.

It is not a de Polignac number, because 74643043 - 2⁹ = 74642531 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74642996 and 74643014.

It is not an unprimeable number, because it can be changed into a prime (74640043) 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, 13855 + ... + 18472.

It is an arithmetic number, because the mean of its divisors is an integer number (18669420).

Almost surely, 2^74643043 is an apocalyptic number.

74643043 is a deficient number, since it is larger than the sum of its proper divisors (34637).

74643043 is a wasteful number, since it uses less digits than its factorization.

74643043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34636.

The product of its (nonzero) digits is 24192, while the sum is 31.

The square root of 74643043 is about 8639.6205356485. The cubic root of 74643043 is about 421.0462257625.

The spelling of 74643043 in words is "seventy-four million, six hundred forty-three thousand, forty-three".