138040135 has 8 divisors (see below), whose sum is σ = 172850400. Its totient is φ = 105630624.

The previous prime is 138040127. The next prime is 138040159. The reversal of 138040135 is 531040831.

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

It is a cyclic number.

It is not a de Polignac number, because 138040135 - 2³ = 138040127 is a prime.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 600060 + ... + 600289.

It is an arithmetic number, because the mean of its divisors is an integer number (21606300).

Almost surely, 2^138040135 is an apocalyptic number.

138040135 is a deficient number, since it is larger than the sum of its proper divisors (34810265).

138040135 is a wasteful number, since it uses less digits than its factorization.

138040135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1200377.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 138040135 is about 11749.0482593272. The cubic root of 138040135 is about 516.8150178691.

Adding to 138040135 its reverse (531040831), we get a palindrome (669080966).

The spelling of 138040135 in words is "one hundred thirty-eight million, forty thousand, one hundred thirty-five".