139570129 has 2 divisors, whose sum is σ = 139570130. Its totient is φ = 139570128.

The previous prime is 139570103. The next prime is 139570139. The reversal of 139570129 is 921075931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78730129 + 60840000 = 8873^2 + 7800^2 .

It is a cyclic number.

It is not a de Polignac number, because 139570129 - 2⁵ = 139570097 is a prime.

It is not a weakly prime, because it can be changed into another prime (139570139) 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, 69785064 + 69785065.

It is an arithmetic number, because the mean of its divisors is an integer number (69785065).

Almost surely, 2^139570129 is an apocalyptic number.

It is an amenable number.

139570129 is a deficient number, since it is larger than the sum of its proper divisors (1).

139570129 is an equidigital number, since it uses as much as digits as its factorization.

139570129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17010, while the sum is 37.

The square root of 139570129 is about 11813.9802352975. The cubic root of 139570129 is about 518.7174123043.

The spelling of 139570129 in words is "one hundred thirty-nine million, five hundred seventy thousand, one hundred twenty-nine".