135500138 has 8 divisors (see below), whose sum is σ = 207977088. Its totient is φ = 66174444.

The previous prime is 135500129. The next prime is 135500143. The reversal of 135500138 is 831005531.

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

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 787706 + ... + 787877.

It is an arithmetic number, because the mean of its divisors is an integer number (25997136).

Almost surely, 2^135500138 is an apocalyptic number.

135500138 is a deficient number, since it is larger than the sum of its proper divisors (72476950).

135500138 is a wasteful number, since it uses less digits than its factorization.

135500138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575628.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 135500138 is about 11640.4526544289. The cubic root of 135500138 is about 513.6255025178.

Adding to 135500138 its reverse (831005531), we get a palindrome (966505669).

The spelling of 135500138 in words is "one hundred thirty-five million, five hundred thousand, one hundred thirty-eight".