123004120543 has 6 divisors (see below), whose sum is σ = 128584648304. Its totient is φ = 117656114796.

The previous prime is 123004120537. The next prime is 123004120579. The reversal of 123004120543 is 345021400321.

It is not a de Polignac number, because 123004120543 - 2²⁵ = 122970566111 is a prime.

It is a super-2 number, since 2×123004120543² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123004120583) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 116260455 + ... + 116261512.

Almost surely, 2^123004120543 is an apocalyptic number.

123004120543 is a deficient number, since it is larger than the sum of its proper divisors (5580527761).

123004120543 is an equidigital number, since it uses as much as digits as its factorization.

123004120543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232522013 (or 232521990 counting only the distinct ones).

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

Adding to 123004120543 its reverse (345021400321), we get a palindrome (468025520864).

The spelling of 123004120543 in words is "one hundred twenty-three billion, four million, one hundred twenty thousand, five hundred forty-three".