139055 has 16 divisors (see below), whose sum is σ = 198720. Its totient is φ = 91392.

The previous prime is 139033. The next prime is 139067. The reversal of 139055 is 550931.

It is not a de Polignac number, because 139055 - 2⁸ = 138799 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 139055.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 139055.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 947 + ... + 1083.

It is an arithmetic number, because the mean of its divisors is an integer number (12420).

2¹³⁹⁰⁵⁵ is an apocalyptic number.

139055 is a deficient number, since it is larger than the sum of its proper divisors (59665).

139055 is a wasteful number, since it uses less digits than its factorization.

139055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178.

The product of its (nonzero) digits is 675, while the sum is 23.

The square root of 139055 is about 372.9007910960. The cubic root of 139055 is about 51.8078460410.

Adding to 139055 its reverse (550931), we get a palindrome (689986).

The spelling of 139055 in words is "one hundred thirty-nine thousand, fifty-five".