129861103 has 2 divisors, whose sum is σ = 129861104. Its totient is φ = 129861102.

The previous prime is 129861097. The next prime is 129861107. The reversal of 129861103 is 301168921.

It is a strong prime.

It is an emirp because it is prime and its reverse (301168921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 129861103 - 2⁵ = 129861071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129861107) 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, 64930551 + 64930552.

It is an arithmetic number, because the mean of its divisors is an integer number (64930552).

Almost surely, 2^129861103 is an apocalyptic number.

129861103 is a deficient number, since it is larger than the sum of its proper divisors (1).

129861103 is an equidigital number, since it uses as much as digits as its factorization.

129861103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 129861103 is about 11395.6615867619. The cubic root of 129861103 is about 506.3992212049.

The spelling of 129861103 in words is "one hundred twenty-nine million, eight hundred sixty-one thousand, one hundred three".