138148 has 6 divisors (see below), whose sum is σ = 241766. Its totient is φ = 69072.

The previous prime is 138143. The next prime is 138157. The reversal of 138148 is 841831.

It can be written as a sum of positive squares in only one way, i.e., 97344 + 40804 = 312^2 + 202^2 .

It is not an unprimeable number, because it can be changed into a prime (138143) by changing a digit.

138148 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17265 + ... + 17272.

2¹³⁸¹⁴⁸ is an apocalyptic number.

It is an amenable number.

138148 is a deficient number, since it is larger than the sum of its proper divisors (103618).

138148 is a wasteful number, since it uses less digits than its factorization.

138148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34541 (or 34539 counting only the distinct ones).

The product of its digits is 768, while the sum is 25.

The square root of 138148 is about 371.6826603435. The cubic root of 138148 is about 51.6949596454.

Adding to 138148 its reverse (841831), we get a palindrome (979979).

The spelling of 138148 in words is "one hundred thirty-eight thousand, one hundred forty-eight".