78043 has 4 divisors (see below), whose sum is σ = 89200. Its totient is φ = 66888.

The previous prime is 78041. The next prime is 78049. The reversal of 78043 is 34087.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34087 = 89 ⋅383.

It is a cyclic number.

It is not a de Polignac number, because 78043 - 2¹ = 78041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78041) 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, 5568 + ... + 5581.

It is an arithmetic number, because the mean of its divisors is an integer number (22300).

2⁷⁸⁰⁴³ is an apocalyptic number.

78043 is a deficient number, since it is larger than the sum of its proper divisors (11157).

78043 is a wasteful number, since it uses less digits than its factorization.

78043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11156.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 78043 is about 279.3617726175. The cubic root of 78043 is about 42.7344368414.

Subtracting from 78043 its reverse (34087), we obtain a triangular number (43956 = T₂₉₆).

The spelling of 78043 in words is "seventy-eight thousand, forty-three".