243450143 has 4 divisors (see below), whose sum is σ = 243486168. Its totient is φ = 243414120.

The previous prime is 243450131. The next prime is 243450167. The reversal of 243450143 is 341054342.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 341054342 = 2 ⋅170527171.

It is a cyclic number.

It is not a de Polignac number, because 243450143 - 2⁴ = 243450127 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 (243450043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4493 + ... + 22518.

It is an arithmetic number, because the mean of its divisors is an integer number (60871542).

Almost surely, 2^243450143 is an apocalyptic number.

243450143 is a deficient number, since it is larger than the sum of its proper divisors (36025).

243450143 is an equidigital number, since it uses as much as digits as its factorization.

243450143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36024.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 243450143 is about 15602.8889312204. Note that the first 3 decimals coincide. The cubic root of 243450143 is about 624.4102323470.

The spelling of 243450143 in words is "two hundred forty-three million, four hundred fifty thousand, one hundred forty-three".