123443120043 has 8 divisors (see below), whose sum is σ = 182878696400. Its totient is φ = 82295413344.

The previous prime is 123443120039. The next prime is 123443120093. The reversal of 123443120043 is 340021344321.

123443120043 is a `hidden beast` number, since 1 + 2 + 344 + 312 + 0 + 0 + 4 + 3 = 666.

It is not a de Polignac number, because 123443120043 - 2² = 123443120039 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 4571967409 = 123443120043 / (1 + 2 + 3 + 4 + 4 + 3 + 1 + 2 + 0 + 0 + 4 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123443119989 and 123443120016.

It is not an unprimeable number, because it can be changed into a prime (123443120093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2285983678 + ... + 2285983731.

It is an arithmetic number, because the mean of its divisors is an integer number (22859837050).

Almost surely, 2^123443120043 is an apocalyptic number.

123443120043 is a deficient number, since it is larger than the sum of its proper divisors (59435576357).

123443120043 is an equidigital number, since it uses as much as digits as its factorization.

123443120043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4571967418 (or 4571967412 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 123443120043 its reverse (340021344321), we get a palindrome (463464464364).

The spelling of 123443120043 in words is "one hundred twenty-three billion, four hundred forty-three million, one hundred twenty thousand, forty-three".