138043141 has 4 divisors (see below), whose sum is σ = 138514572. Its totient is φ = 137571712.

The previous prime is 138043127. The next prime is 138043229. The reversal of 138043141 is 141340831.

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

It can be written as a sum of positive squares in 2 ways, for example, as 126652516 + 11390625 = 11254^2 + 3375^2 .

It is a cyclic number.

It is not a de Polignac number, because 138043141 - 2⁹ = 138042629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138043441) 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 3 ways as a sum of consecutive naturals, for example, 235276 + ... + 235861.

It is an arithmetic number, because the mean of its divisors is an integer number (34628643).

Almost surely, 2^138043141 is an apocalyptic number.

It is an amenable number.

138043141 is a deficient number, since it is larger than the sum of its proper divisors (471431).

138043141 is an equidigital number, since it uses as much as digits as its factorization.

138043141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471430.

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

The square root of 138043141 is about 11749.1761838863. The cubic root of 138043141 is about 516.8187692772.

Adding to 138043141 its reverse (141340831), we get a palindrome (279383972).

It can be divided in two parts, 1380 and 43141, that added together give a square (44521 = 211²).

The spelling of 138043141 in words is "one hundred thirty-eight million, forty-three thousand, one hundred forty-one".