135138138 has 8 divisors (see below), whose sum is σ = 270276288. Its totient is φ = 45046044.

The previous prime is 135138077. The next prime is 135138187. The reversal of 135138138 is 831831531.

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

135138138 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 135138099 and 135138108.

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, 11261506 + ... + 11261517.

It is an arithmetic number, because the mean of its divisors is an integer number (33784536).

Almost surely, 2^135138138 is an apocalyptic number.

135138138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

135138138 is a wasteful number, since it uses less digits than its factorization.

135138138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22523028.

The product of its digits is 8640, while the sum is 33.

The square root of 135138138 is about 11624.8930317659. The cubic root of 135138138 is about 513.1676966958.

Adding to 135138138 its reverse (831831531), we get a palindrome (966969669).

The spelling of 135138138 in words is "one hundred thirty-five million, one hundred thirty-eight thousand, one hundred thirty-eight".