138442103 has 2 divisors, whose sum is σ = 138442104. Its totient is φ = 138442102.

The previous prime is 138442021. The next prime is 138442127. The reversal of 138442103 is 301244831.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138442103 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138442133) 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, 69221051 + 69221052.

It is an arithmetic number, because the mean of its divisors is an integer number (69221052).

Almost surely, 2^138442103 is an apocalyptic number.

138442103 is a deficient number, since it is larger than the sum of its proper divisors (1).

138442103 is an equidigital number, since it uses as much as digits as its factorization.

138442103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 138442103 is about 11766.1422309948. The cubic root of 138442103 is about 517.3161807563.

Adding to 138442103 its reverse (301244831), we get a palindrome (439686934).

The spelling of 138442103 in words is "one hundred thirty-eight million, four hundred forty-two thousand, one hundred three".