129195103 has 2 divisors, whose sum is σ = 129195104. Its totient is φ = 129195102.

The previous prime is 129195049. The next prime is 129195113. The reversal of 129195103 is 301591921.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 129195103 - 2¹⁷ = 129064031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129195113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64597551 + 64597552.

It is an arithmetic number, because the mean of its divisors is an integer number (64597552).

Almost surely, 2^129195103 is an apocalyptic number.

129195103 is a deficient number, since it is larger than the sum of its proper divisors (1).

129195103 is an equidigital number, since it uses as much as digits as its factorization.

129195103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2430, while the sum is 31.

The square root of 129195103 is about 11366.4023771816. The cubic root of 129195103 is about 505.5320380443.

The spelling of 129195103 in words is "one hundred twenty-nine million, one hundred ninety-five thousand, one hundred three".