129091133 has 2 divisors, whose sum is σ = 129091134. Its totient is φ = 129091132.

The previous prime is 129091103. The next prime is 129091159. The reversal of 129091133 is 331190921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128097124 + 994009 = 11318^2 + 997^2 .

It is a cyclic number.

It is not a de Polignac number, because 129091133 - 2⁶ = 129091069 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 129091096 and 129091105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129091103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64545566 + 64545567.

It is an arithmetic number, because the mean of its divisors is an integer number (64545567).

Almost surely, 2^129091133 is an apocalyptic number.

It is an amenable number.

129091133 is a deficient number, since it is larger than the sum of its proper divisors (1).

129091133 is an equidigital number, since it uses as much as digits as its factorization.

129091133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 129091133 is about 11361.8278899128. The cubic root of 129091133 is about 505.3963923673.

The spelling of 129091133 in words is "one hundred twenty-nine million, ninety-one thousand, one hundred thirty-three".