120812129 has 2 divisors, whose sum is σ = 120812130. Its totient is φ = 120812128.

The previous prime is 120812113. The next prime is 120812191. The reversal of 120812129 is 921218021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112678225 + 8133904 = 10615^2 + 2852^2 .

It is a cyclic number.

It is not a de Polignac number, because 120812129 - 2⁴ = 120812113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120812098 and 120812107.

It is not a weakly prime, because it can be changed into another prime (120812429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60406064 + 60406065.

It is an arithmetic number, because the mean of its divisors is an integer number (60406065).

Almost surely, 2^120812129 is an apocalyptic number.

It is an amenable number.

120812129 is a deficient number, since it is larger than the sum of its proper divisors (1).

120812129 is an equidigital number, since it uses as much as digits as its factorization.

120812129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 120812129 is about 10991.4570917599. The cubic root of 120812129 is about 494.3526264925.

The spelling of 120812129 in words is "one hundred twenty million, eight hundred twelve thousand, one hundred twenty-nine".