54240043123 has 4 divisors (see below), whose sum is σ = 61988620720. Its totient is φ = 46491465528.

The previous prime is 54240043063. The next prime is 54240043159. The reversal of 54240043123 is 32134004245.

It is a happy number.

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 54240043123 - 2⁹ = 54240042611 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54240043091 and 54240043100.

It is not an unprimeable number, because it can be changed into a prime (54241043123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3874288788 + ... + 3874288801.

It is an arithmetic number, because the mean of its divisors is an integer number (15497155180).

Almost surely, 2^54240043123 is an apocalyptic number.

54240043123 is a deficient number, since it is larger than the sum of its proper divisors (7748577597).

54240043123 is an equidigital number, since it uses as much as digits as its factorization.

54240043123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7748577596.

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 54240043123 its reverse (32134004245), we get a palindrome (86374047368).

The spelling of 54240043123 in words is "fifty-four billion, two hundred forty million, forty-three thousand, one hundred twenty-three".