139124 has 6 divisors (see below), whose sum is σ = 243474. Its totient is φ = 69560.

The previous prime is 139123. The next prime is 139133. The reversal of 139124 is 421931.

It can be written as a sum of positive squares in only one way, i.e., 110224 + 28900 = 332^2 + 170^2 .

It is a junction number, because it is equal to n+sod(n) for n = 139096 and 139105.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 17387 + ... + 17394.

It is an arithmetic number, because the mean of its divisors is an integer number (40579).

2¹³⁹¹²⁴ is an apocalyptic number.

It is an amenable number.

139124 is a deficient number, since it is larger than the sum of its proper divisors (104350).

139124 is a wasteful number, since it uses less digits than its factorization.

139124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34785 (or 34783 counting only the distinct ones).

The product of its digits is 216, while the sum is 20.

The square root of 139124 is about 372.9932975269. The cubic root of 139124 is about 51.8164137546.

The spelling of 139124 in words is "one hundred thirty-nine thousand, one hundred twenty-four".