138144107 has 2 divisors, whose sum is σ = 138144108. Its totient is φ = 138144106.

The previous prime is 138144103. The next prime is 138144119. The reversal of 138144107 is 701441831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 138144107 - 2² = 138144103 is a prime.

It is equal to p_7813163 and since 138144107 and 7813163 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 138144107.

It is not a weakly prime, because it can be changed into another prime (138144101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69072053 + 69072054.

It is an arithmetic number, because the mean of its divisors is an integer number (69072054).

Almost surely, 2^138144107 is an apocalyptic number.

138144107 is a deficient number, since it is larger than the sum of its proper divisors (1).

138144107 is an equidigital number, since it uses as much as digits as its factorization.

138144107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 138144107 is about 11753.4721252913. The cubic root of 138144107 is about 516.9447405418.

Adding to 138144107 its reverse (701441831), we get a palindrome (839585938).

The spelling of 138144107 in words is "one hundred thirty-eight million, one hundred forty-four thousand, one hundred seven".