138132128 has 24 divisors (see below), whose sum is σ = 286261920. Its totient is φ = 65430720.

The previous prime is 138132119. The next prime is 138132131. The reversal of 138132128 is 821231831.

It is a self number, because there is not a number n which added to its sum of digits gives 138132128.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112988 + ... + 114203.

It is an arithmetic number, because the mean of its divisors is an integer number (11927580).

Almost surely, 2^138132128 is an apocalyptic number.

It is an amenable number.

138132128 is an abundant number, since it is smaller than the sum of its proper divisors (148129792).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138132128 is a wasteful number, since it uses less digits than its factorization.

138132128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227220 (or 227212 counting only the distinct ones).

The product of its digits is 2304, while the sum is 29.

The square root of 138132128 is about 11752.9625201478. The cubic root of 138132128 is about 516.9297980295.

Adding to 138132128 its reverse (821231831), we get a palindrome (959363959).

The spelling of 138132128 in words is "one hundred thirty-eight million, one hundred thirty-two thousand, one hundred twenty-eight".