140423443123 has 4 divisors (see below), whose sum is σ = 140494617648. Its totient is φ = 140352268600.

The previous prime is 140423443109. The next prime is 140423443169. The reversal of 140423443123 is 321344324041.

140423443123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321344324041 = 13 ⋅24718794157.

It is a cyclic number.

It is not a de Polignac number, because 140423443123 - 2⁵ = 140423443091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140423443183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35584303 + ... + 35588248.

It is an arithmetic number, because the mean of its divisors is an integer number (35123654412).

Almost surely, 2^140423443123 is an apocalyptic number.

140423443123 is a deficient number, since it is larger than the sum of its proper divisors (71174525).

140423443123 is an equidigital number, since it uses as much as digits as its factorization.

140423443123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71174524.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 140423443123 its reverse (321344324041), we get a palindrome (461767767164).

The spelling of 140423443123 in words is "one hundred forty billion, four hundred twenty-three million, four hundred forty-three thousand, one hundred twenty-three".