138144130 has 16 divisors (see below), whose sum is σ = 250187904. Its totient is φ = 54918000.

The previous prime is 138144119. The next prime is 138144131. The reversal of 138144130 is 31441831.

It is a junction number, because it is equal to n+sod(n) for n = 138144095 and 138144104.

It is not an unprimeable number, because it can be changed into a prime (138144131) 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 in 7 ways as a sum of consecutive naturals, for example, 40746 + ... + 44005.

It is an arithmetic number, because the mean of its divisors is an integer number (15636744).

Almost surely, 2^138144130 is an apocalyptic number.

138144130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138144130 is a deficient number, since it is larger than the sum of its proper divisors (112043774).

138144130 is a wasteful number, since it uses less digits than its factorization.

138144130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84921.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 138144130 is about 11753.4731037256. The cubic root of 138144130 is about 516.9447692310.

Adding to 138144130 its reverse (31441831), we get a palindrome (169585961).

The spelling of 138144130 in words is "one hundred thirty-eight million, one hundred forty-four thousand, one hundred thirty".