123243354035443 has 4 divisors (see below), whose sum is σ = 123249480384240. Its totient is φ = 123237227686648.

The previous prime is 123243354035387. The next prime is 123243354035449. The reversal of 123243354035443 is 344530453342321.

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-123243354035443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123243354035393 and 123243354035402.

It is not an unprimeable number, because it can be changed into a prime (123243354035449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3063144223 + ... + 3063184456.

It is an arithmetic number, because the mean of its divisors is an integer number (30812370096060).

Almost surely, 2^{123243354035443} is an apocalyptic number.

123243354035443 is a deficient number, since it is larger than the sum of its proper divisors (6126348797).

123243354035443 is an equidigital number, since it uses as much as digits as its factorization.

123243354035443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6126348796.

The product of its (nonzero) digits is 6220800, while the sum is 46.

The spelling of 123243354035443 in words is "one hundred twenty-three trillion, two hundred forty-three billion, three hundred fifty-four million, thirty-five thousand, four hundred forty-three".