138910141 has 2 divisors, whose sum is σ = 138910142. Its totient is φ = 138910140.

The previous prime is 138910139. The next prime is 138910147. The reversal of 138910141 is 141019831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73462041 + 65448100 = 8571^2 + 8090^2 .

It is a cyclic number.

It is not a de Polignac number, because 138910141 - 2¹ = 138910139 is a prime.

Together with 138910139, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138910147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69455070 + 69455071.

It is an arithmetic number, because the mean of its divisors is an integer number (69455071).

Almost surely, 2^138910141 is an apocalyptic number.

It is an amenable number.

138910141 is a deficient number, since it is larger than the sum of its proper divisors (1).

138910141 is an equidigital number, since it uses as much as digits as its factorization.

138910141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 138910141 is about 11786.0146359997. The cubic root of 138910141 is about 517.8984970787.

Adding to 138910141 its reverse (141019831), we get a palindrome (279929972).

The spelling of 138910141 in words is "one hundred thirty-eight million, nine hundred ten thousand, one hundred forty-one".