129127007 has 2 divisors, whose sum is σ = 129127008. Its totient is φ = 129127006.

The previous prime is 129126989. The next prime is 129127013. The reversal of 129127007 is 700721921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 129127007 - 2¹⁸ = 128864863 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129127067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64563503 + 64563504.

It is an arithmetic number, because the mean of its divisors is an integer number (64563504).

Almost surely, 2^129127007 is an apocalyptic number.

129127007 is a deficient number, since it is larger than the sum of its proper divisors (1).

129127007 is an equidigital number, since it uses as much as digits as its factorization.

129127007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1764, while the sum is 29.

The square root of 129127007 is about 11363.4064874931. The cubic root of 129127007 is about 505.4432040281.

Adding to 129127007 its reverse (700721921), we get a palindrome (829848928).

The spelling of 129127007 in words is "one hundred twenty-nine million, one hundred twenty-seven thousand, seven".