129618103 has 4 divisors (see below), whose sum is σ = 131815080. Its totient is φ = 127421128.

The previous prime is 129618091. The next prime is 129618109. The reversal of 129618103 is 301816921.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129618103 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129618109) 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 in 3 ways as a sum of consecutive naturals, for example, 1098400 + ... + 1098517.

It is an arithmetic number, because the mean of its divisors is an integer number (32953770).

Almost surely, 2^129618103 is an apocalyptic number.

129618103 is a deficient number, since it is larger than the sum of its proper divisors (2196977).

129618103 is an equidigital number, since it uses as much as digits as its factorization.

129618103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2196976.

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

The square root of 129618103 is about 11384.9946420716. The cubic root of 129618103 is about 506.0831608333.

The spelling of 129618103 in words is "one hundred twenty-nine million, six hundred eighteen thousand, one hundred three".