129788567 has 2 divisors, whose sum is σ = 129788568. Its totient is φ = 129788566.

The previous prime is 129788531. The next prime is 129788597. The reversal of 129788567 is 765887921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 129788567 - 2¹² = 129784471 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 (129788507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64894283 + 64894284.

It is an arithmetic number, because the mean of its divisors is an integer number (64894284).

Almost surely, 2^129788567 is an apocalyptic number.

129788567 is a deficient number, since it is larger than the sum of its proper divisors (1).

129788567 is an equidigital number, since it uses as much as digits as its factorization.

129788567 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1693440, while the sum is 53.

The square root of 129788567 is about 11392.4785275198. The cubic root of 129788567 is about 506.3049178446.

The spelling of 129788567 in words is "one hundred twenty-nine million, seven hundred eighty-eight thousand, five hundred sixty-seven".