138106043 has 2 divisors, whose sum is σ = 138106044. Its totient is φ = 138106042.

The previous prime is 138106027. The next prime is 138106049. The reversal of 138106043 is 340601831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 138106043 - 2⁴ = 138106027 is a prime.

It is a super-2 number, since 2×138106043² = 38146558226235698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (138106049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69053021 + 69053022.

It is an arithmetic number, because the mean of its divisors is an integer number (69053022).

Almost surely, 2^138106043 is an apocalyptic number.

138106043 is a deficient number, since it is larger than the sum of its proper divisors (1).

138106043 is an equidigital number, since it uses as much as digits as its factorization.

138106043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 138106043 is about 11751.8527475458. The cubic root of 138106043 is about 516.8972568125.

Adding to 138106043 its reverse (340601831), we get a palindrome (478707874).

The spelling of 138106043 in words is "one hundred thirty-eight million, one hundred six thousand, forty-three".