7000138129 has 2 divisors, whose sum is σ = 7000138130. Its totient is φ = 7000138128.

The previous prime is 7000138121. The next prime is 7000138153. The reversal of 7000138129 is 9218310007.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4012969104 + 2987169025 = 63348^2 + 54655^2 .

It is a cyclic number.

It is not a de Polignac number, because 7000138129 - 2³ = 7000138121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7000138129.

It is not a weakly prime, because it can be changed into another prime (7000138121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3500069064 + 3500069065.

It is an arithmetic number, because the mean of its divisors is an integer number (3500069065).

Almost surely, 2^7000138129 is an apocalyptic number.

It is an amenable number.

7000138129 is a deficient number, since it is larger than the sum of its proper divisors (1).

7000138129 is an equidigital number, since it uses as much as digits as its factorization.

7000138129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 7000138129 is about 83666.8281279983. The cubic root of 7000138129 is about 1912.9437651311.

The spelling of 7000138129 in words is "seven billion, one hundred thirty-eight thousand, one hundred twenty-nine".