139302529 has 2 divisors, whose sum is σ = 139302530. Its totient is φ = 139302528.

The previous prime is 139302523. The next prime is 139302563. The reversal of 139302529 is 925203931.

It is an a-pointer prime, because the next prime (139302563) can be obtained adding 139302529 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105021504 + 34281025 = 10248^2 + 5855^2 .

It is an emirp because it is prime and its reverse (925203931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139302529 - 2¹¹ = 139300481 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 139302494 and 139302503.

It is not a weakly prime, because it can be changed into another prime (139302523) 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, 69651264 + 69651265.

It is an arithmetic number, because the mean of its divisors is an integer number (69651265).

Almost surely, 2^139302529 is an apocalyptic number.

It is an amenable number.

139302529 is a deficient number, since it is larger than the sum of its proper divisors (1).

139302529 is an equidigital number, since it uses as much as digits as its factorization.

139302529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 139302529 is about 11802.6492365062. The cubic root of 139302529 is about 518.3856851920.

The spelling of 139302529 in words is "one hundred thirty-nine million, three hundred two thousand, five hundred twenty-nine".