139112 has 8 divisors (see below), whose sum is σ = 260850. Its totient is φ = 69552.

The previous prime is 139109. The next prime is 139121. The reversal of 139112 is 211931.

It is a happy number.

139112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 111556 + 27556 = 334^2 + 166^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8687 + ... + 8702.

2¹³⁹¹¹² is an apocalyptic number.

It is an amenable number.

139112 is a deficient number, since it is larger than the sum of its proper divisors (121738).

139112 is a wasteful number, since it uses less digits than its factorization.

139112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17395 (or 17391 counting only the distinct ones).

The product of its digits is 54, while the sum is 17.

The square root of 139112 is about 372.9772111001. The cubic root of 139112 is about 51.8149239210.

Adding to 139112 its sum of digits (17), we get a square (139129 = 373²).

The spelling of 139112 in words is "one hundred thirty-nine thousand, one hundred twelve".