138427301 has 2 divisors, whose sum is σ = 138427302. Its totient is φ = 138427300.

The previous prime is 138427283. The next prime is 138427313. The reversal of 138427301 is 103724831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116618401 + 21808900 = 10799^2 + 4670^2 .

It is a cyclic number.

It is not a de Polignac number, because 138427301 - 2²² = 134232997 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138427321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69213650 + 69213651.

It is an arithmetic number, because the mean of its divisors is an integer number (69213651).

Almost surely, 2^138427301 is an apocalyptic number.

It is an amenable number.

138427301 is a deficient number, since it is larger than the sum of its proper divisors (1).

138427301 is an equidigital number, since it uses as much as digits as its factorization.

138427301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 138427301 is about 11765.5132059762. The cubic root of 138427301 is about 517.2977432365.

The spelling of 138427301 in words is "one hundred thirty-eight million, four hundred twenty-seven thousand, three hundred one".