243201043 has 4 divisors (see below), whose sum is σ = 243252720. Its totient is φ = 243149368.

The previous prime is 243200987. The next prime is 243201061. The reversal of 243201043 is 340102342.

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 243201043 - 2¹⁷ = 243069971 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 243201043.

It is not an unprimeable number, because it can be changed into a prime (243201943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17983 + ... + 28456.

It is an arithmetic number, because the mean of its divisors is an integer number (60813180).

Almost surely, 2^243201043 is an apocalyptic number.

243201043 is a deficient number, since it is larger than the sum of its proper divisors (51677).

243201043 is an equidigital number, since it uses as much as digits as its factorization.

243201043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51676.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 243201043 is about 15594.9043921404. The cubic root of 243201043 is about 624.1971926020.

Adding to 243201043 its reverse (340102342), we get a palindrome (583303385).

The spelling of 243201043 in words is "two hundred forty-three million, two hundred one thousand, forty-three".