138754727 has 2 divisors, whose sum is σ = 138754728. Its totient is φ = 138754726.

The previous prime is 138754643. The next prime is 138754741. The reversal of 138754727 is 727457831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 138754727 - 2¹² = 138750631 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 (138754757) 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, 69377363 + 69377364.

It is an arithmetic number, because the mean of its divisors is an integer number (69377364).

Almost surely, 2^138754727 is an apocalyptic number.

138754727 is a deficient number, since it is larger than the sum of its proper divisors (1).

138754727 is an equidigital number, since it uses as much as digits as its factorization.

138754727 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 329280, while the sum is 44.

The square root of 138754727 is about 11779.4196376562. The cubic root of 138754727 is about 517.7052817327.

The spelling of 138754727 in words is "one hundred thirty-eight million, seven hundred fifty-four thousand, seven hundred twenty-seven".