139043558123 has 2 divisors, whose sum is σ = 139043558124. Its totient is φ = 139043558122.

The previous prime is 139043558107. The next prime is 139043558189. The reversal of 139043558123 is 321855340931.

139043558123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (321855340931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139043558123 - 2⁴ = 139043558107 is a prime.

It is a super-2 number, since 2×139043558123² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (139043558023) 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 as a sum of consecutive naturals, namely, 69521779061 + 69521779062.

It is an arithmetic number, because the mean of its divisors is an integer number (69521779062).

Almost surely, 2^139043558123 is an apocalyptic number.

139043558123 is a deficient number, since it is larger than the sum of its proper divisors (1).

139043558123 is an equidigital number, since it uses as much as digits as its factorization.

139043558123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 388800, while the sum is 44.

The spelling of 139043558123 in words is "one hundred thirty-nine billion, forty-three million, five hundred fifty-eight thousand, one hundred twenty-three".