129378803 has 2 divisors, whose sum is σ = 129378804. Its totient is φ = 129378802.

The previous prime is 129378797. The next prime is 129378811. The reversal of 129378803 is 308873921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 129378803 - 2¹⁶ = 129313267 is a prime.

It is not a weakly prime, because it can be changed into another prime (129378203) 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, 64689401 + 64689402.

It is an arithmetic number, because the mean of its divisors is an integer number (64689402).

Almost surely, 2^129378803 is an apocalyptic number.

129378803 is a deficient number, since it is larger than the sum of its proper divisors (1).

129378803 is an equidigital number, since it uses as much as digits as its factorization.

129378803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 129378803 is about 11374.4803397782. The cubic root of 129378803 is about 505.7715266241.

The spelling of 129378803 in words is "one hundred twenty-nine million, three hundred seventy-eight thousand, eight hundred three".