243120454423 has 12 divisors (see below), whose sum is σ = 308523916872. Its totient is φ = 189444509520.

The previous prime is 243120454403. The next prime is 243120454427. The reversal of 243120454423 is 324454021342.

It is a de Polignac number, because none of the positive numbers 2^k-243120454423 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 (243120454427) 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, 225528640 + ... + 225529717.

It is an arithmetic number, because the mean of its divisors is an integer number (25710326406).

Almost surely, 2^243120454423 is an apocalyptic number.

243120454423 is a deficient number, since it is larger than the sum of its proper divisors (65403462449).

243120454423 is a wasteful number, since it uses less digits than its factorization.

243120454423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451058382 (or 451058375 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 34.

Adding to 243120454423 its reverse (324454021342), we get a palindrome (567574475765).

The spelling of 243120454423 in words is "two hundred forty-three billion, one hundred twenty million, four hundred fifty-four thousand, four hundred twenty-three".