173439243 has 12 divisors (see below), whose sum is σ = 251524728. Its totient is φ = 115164000.

The previous prime is 173439241. The next prime is 173439263. The reversal of 173439243 is 342934371.

173439243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 173439243 - 2¹ = 173439241 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 173439198 and 173439207.

It is not an unprimeable number, because it can be changed into a prime (173439241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36130 + ... + 40647.

It is an arithmetic number, because the mean of its divisors is an integer number (20960394).

Almost surely, 2^173439243 is an apocalyptic number.

173439243 is a deficient number, since it is larger than the sum of its proper divisors (78085485).

173439243 is a wasteful number, since it uses less digits than its factorization.

173439243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77034 (or 77031 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 173439243 is about 13169.6333661951. The cubic root of 173439243 is about 557.6766442729.

The spelling of 173439243 in words is "one hundred seventy-three million, four hundred thirty-nine thousand, two hundred forty-three".