138122068 has 24 divisors (see below), whose sum is σ = 280929600. Its totient is φ = 58191168.

The previous prime is 138122027. The next prime is 138122087. The reversal of 138122068 is 860221831.

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, 40153 + ... + 43456.

It is an arithmetic number, because the mean of its divisors is an integer number (11705400).

Almost surely, 2^138122068 is an apocalyptic number.

It is an amenable number.

138122068 is an abundant number, since it is smaller than the sum of its proper divisors (142807532).

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

138122068 is a wasteful number, since it uses less digits than its factorization.

138122068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83679 (or 83677 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 138122068 is about 11752.5345351545. The cubic root of 138122068 is about 516.9172485956.

Adding to 138122068 its reverse (860221831), we get a palindrome (998343899).

The spelling of 138122068 in words is "one hundred thirty-eight million, one hundred twenty-two thousand, sixty-eight".