8138129 has 2 divisors, whose sum is σ = 8138130. Its totient is φ = 8138128.

The previous prime is 8138111. The next prime is 8138149. The reversal of 8138129 is 9218318.

8138129 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8133904 + 4225 = 2852^2 + 65^2 .

It is a cyclic number.

It is not a de Polignac number, because 8138129 - 2¹⁶ = 8072593 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 8138095 and 8138104.

It is not a weakly prime, because it can be changed into another prime (8138149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4069064 + 4069065.

It is an arithmetic number, because the mean of its divisors is an integer number (4069065).

Almost surely, 2^8138129 is an apocalyptic number.

It is an amenable number.

8138129 is a deficient number, since it is larger than the sum of its proper divisors (1).

8138129 is an equidigital number, since it uses as much as digits as its factorization.

8138129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 32.

The square root of 8138129 is about 2852.7406121132. The cubic root of 8138129 is about 201.1445129570.

The spelling of 8138129 in words is "eight million, one hundred thirty-eight thousand, one hundred twenty-nine".