129987103 has 2 divisors, whose sum is σ = 129987104. Its totient is φ = 129987102.

The previous prime is 129987059. The next prime is 129987119. The reversal of 129987103 is 301789921.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129987103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129987163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64993551 + 64993552.

It is an arithmetic number, because the mean of its divisors is an integer number (64993552).

Almost surely, 2^129987103 is an apocalyptic number.

129987103 is a deficient number, since it is larger than the sum of its proper divisors (1).

129987103 is an equidigital number, since it uses as much as digits as its factorization.

129987103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 129987103 is about 11401.1886660997. The cubic root of 129987103 is about 506.5629491550.

The spelling of 129987103 in words is "one hundred twenty-nine million, nine hundred eighty-seven thousand, one hundred three".