243122050123 has 4 divisors (see below), whose sum is σ = 243124549200. Its totient is φ = 243119551048.

The previous prime is 243122050109. The next prime is 243122050147. The reversal of 243122050123 is 321050221342.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243122050123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243122020123) 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, 1097440 + ... + 1300237.

It is an arithmetic number, because the mean of its divisors is an integer number (60781137300).

Almost surely, 2^243122050123 is an apocalyptic number.

243122050123 is a deficient number, since it is larger than the sum of its proper divisors (2499077).

243122050123 is a wasteful number, since it uses less digits than its factorization.

243122050123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2499076.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 243122050123 its reverse (321050221342), we get a palindrome (564172271465).

The spelling of 243122050123 in words is "two hundred forty-three billion, one hundred twenty-two million, fifty thousand, one hundred twenty-three".