54140123 has 4 divisors (see below), whose sum is σ = 55027728. Its totient is φ = 53252520.

The previous prime is 54140117. The next prime is 54140143. The reversal of 54140123 is 32104145.

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 54140123 - 2⁸ = 54139867 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54140095 and 54140104.

It is not an unprimeable number, because it can be changed into a prime (54140143) 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, 443711 + ... + 443832.

It is an arithmetic number, because the mean of its divisors is an integer number (13756932).

Almost surely, 2^54140123 is an apocalyptic number.

54140123 is a deficient number, since it is larger than the sum of its proper divisors (887605).

54140123 is an equidigital number, since it uses as much as digits as its factorization.

54140123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887604.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 54140123 is about 7357.9972139163. The cubic root of 54140123 is about 378.3029657725.

Adding to 54140123 its reverse (32104145), we get a palindrome (86244268).

The spelling of 54140123 in words is "fifty-four million, one hundred forty thousand, one hundred twenty-three".