243022440043 has 4 divisors (see below), whose sum is σ = 243028981768. Its totient is φ = 243015898320.

The previous prime is 243022440029. The next prime is 243022440049. The reversal of 243022440043 is 340044220342.

It is a happy number.

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 243022440043 - 2¹³ = 243022431851 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243022439993 and 243022440020.

It is not an unprimeable number, because it can be changed into a prime (243022440049) 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, 3214818 + ... + 3289543.

It is an arithmetic number, because the mean of its divisors is an integer number (60757245442).

Almost surely, 2^243022440043 is an apocalyptic number.

243022440043 is a deficient number, since it is larger than the sum of its proper divisors (6541725).

243022440043 is an equidigital number, since it uses as much as digits as its factorization.

243022440043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6541724.

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 243022440043 its reverse (340044220342), we get a palindrome (583066660385).

The spelling of 243022440043 in words is "two hundred forty-three billion, twenty-two million, four hundred forty thousand, forty-three".