148138 has 8 divisors (see below), whose sum is σ = 235332. Its totient is φ = 69696.

The previous prime is 148123. The next prime is 148139. The reversal of 148138 is 831841.

It can be written as a sum of positive squares in 2 ways, for example, as 110889 + 37249 = 333^2 + 193^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (148139) by changing a digit.

148138 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2145 + ... + 2212.

2¹⁴⁸¹³⁸ is an apocalyptic number.

148138 is a deficient number, since it is larger than the sum of its proper divisors (87194).

148138 is a wasteful number, since it uses less digits than its factorization.

148138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4376.

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

The square root of 148138 is about 384.8869964028. The cubic root of 148138 is about 52.9121601828.

Adding to 148138 its reverse (831841), we get a palindrome (979979).

The spelling of 148138 in words is "one hundred forty-eight thousand, one hundred thirty-eight".