139111 has 12 divisors (see below), whose sum is σ = 172368. Its totient is φ = 111552.

The previous prime is 139109. The next prime is 139121. The reversal of 139111 is 111931.

It is a happy number.

It is not a de Polignac number, because 139111 - 2¹ = 139109 is a prime.

It is an Ulam number.

139111 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139121) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 750 + ... + 916.

It is an arithmetic number, because the mean of its divisors is an integer number (14364).

2¹³⁹¹¹¹ is an apocalyptic number.

139111 is a deficient number, since it is larger than the sum of its proper divisors (33257).

139111 is a wasteful number, since it uses less digits than its factorization.

139111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198 (or 191 counting only the distinct ones).

The product of its digits is 27, while the sum is 16.

The square root of 139111 is about 372.9758705332. The cubic root of 139111 is about 51.8147997643.

The spelling of 139111 in words is "one hundred thirty-nine thousand, one hundred eleven".