123012044543 has 4 divisors (see below), whose sum is σ = 123172008960. Its totient is φ = 122852080128.

The previous prime is 123012044509. The next prime is 123012044567. The reversal of 123012044543 is 345440210321.

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 123012044543 - 2¹⁰ = 123012043519 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 (123012043543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79981055 + ... + 79982592.

It is an arithmetic number, because the mean of its divisors is an integer number (30793002240).

Almost surely, 2^123012044543 is an apocalyptic number.

123012044543 is a deficient number, since it is larger than the sum of its proper divisors (159964417).

123012044543 is an equidigital number, since it uses as much as digits as its factorization.

123012044543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159964416.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 123012044543 its reverse (345440210321), we get a palindrome (468452254864).

The spelling of 123012044543 in words is "one hundred twenty-three billion, twelve million, forty-four thousand, five hundred forty-three".