138706102 has 4 divisors (see below), whose sum is σ = 208059156. Its totient is φ = 69353050.

The previous prime is 138706091. The next prime is 138706103. The reversal of 138706102 is 201607831.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138706103) by changing a digit.

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 as a sum of consecutive naturals, namely, 34676524 + ... + 34676527.

It is an arithmetic number, because the mean of its divisors is an integer number (52014789).

Almost surely, 2^138706102 is an apocalyptic number.

138706102 is a deficient number, since it is larger than the sum of its proper divisors (69353054).

138706102 is an equidigital number, since it uses as much as digits as its factorization.

138706102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69353053.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 138706102 is about 11777.3554756575. The cubic root of 138706102 is about 517.6448000443.

The spelling of 138706102 in words is "one hundred thirty-eight million, seven hundred six thousand, one hundred two".