129375101 has 2 divisors, whose sum is σ = 129375102. Its totient is φ = 129375100.

The previous prime is 129375097. The next prime is 129375137. The reversal of 129375101 is 101573921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129367876 + 7225 = 11374^2 + 85^2 .

It is a cyclic number.

It is not a de Polignac number, because 129375101 - 2² = 129375097 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129374101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64687550 + 64687551.

It is an arithmetic number, because the mean of its divisors is an integer number (64687551).

Almost surely, 2^129375101 is an apocalyptic number.

It is an amenable number.

129375101 is a deficient number, since it is larger than the sum of its proper divisors (1).

129375101 is an equidigital number, since it uses as much as digits as its factorization.

129375101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1890, while the sum is 29.

The square root of 129375101 is about 11374.3176059050. The cubic root of 129375101 is about 505.7667025880.

The spelling of 129375101 in words is "one hundred twenty-nine million, three hundred seventy-five thousand, one hundred one".