133916129 has 2 divisors, whose sum is σ = 133916130. Its totient is φ = 133916128.

The previous prime is 133916119. The next prime is 133916137. The reversal of 133916129 is 921619331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102556129 + 31360000 = 10127^2 + 5600^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133916129 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (133916119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66958064 + 66958065.

It is an arithmetic number, because the mean of its divisors is an integer number (66958065).

Almost surely, 2^133916129 is an apocalyptic number.

It is an amenable number.

133916129 is a deficient number, since it is larger than the sum of its proper divisors (1).

133916129 is an equidigital number, since it uses as much as digits as its factorization.

133916129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8748, while the sum is 35.

The square root of 133916129 is about 11572.2136603158. The cubic root of 133916129 is about 511.6162094257.

The spelling of 133916129 in words is "one hundred thirty-three million, nine hundred sixteen thousand, one hundred twenty-nine".