102320129 has 2 divisors, whose sum is σ = 102320130. Its totient is φ = 102320128.

The previous prime is 102320107. The next prime is 102320131. The reversal of 102320129 is 921023201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75777025 + 26543104 = 8705^2 + 5152^2 .

It is a cyclic number.

It is not a de Polignac number, because 102320129 - 2⁸ = 102319873 is a prime.

Together with 102320131, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102320129.

It is not a weakly prime, because it can be changed into another prime (102320329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51160064 + 51160065.

It is an arithmetic number, because the mean of its divisors is an integer number (51160065).

Almost surely, 2^102320129 is an apocalyptic number.

It is an amenable number.

102320129 is a deficient number, since it is larger than the sum of its proper divisors (1).

102320129 is an equidigital number, since it uses as much as digits as its factorization.

102320129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 102320129 is about 10115.3412695766. The cubic root of 102320129 is about 467.7211688600.

The spelling of 102320129 in words is "one hundred two million, three hundred twenty thousand, one hundred twenty-nine".