170020129 has 2 divisors, whose sum is σ = 170020130. Its totient is φ = 170020128.

The previous prime is 170020099. The next prime is 170020141. The reversal of 170020129 is 921020071.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128867904 + 41152225 = 11352^2 + 6415^2 .

It is a cyclic number.

It is not a de Polignac number, because 170020129 - 2²³ = 161631521 is a prime.

It is not a weakly prime, because it can be changed into another prime (170020159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85010064 + 85010065.

It is an arithmetic number, because the mean of its divisors is an integer number (85010065).

Almost surely, 2^170020129 is an apocalyptic number.

It is an amenable number.

170020129 is a deficient number, since it is larger than the sum of its proper divisors (1).

170020129 is an equidigital number, since it uses as much as digits as its factorization.

170020129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 170020129 is about 13039.1766994699. The cubic root of 170020129 is about 553.9876890833.

The spelling of 170020129 in words is "one hundred seventy million, twenty thousand, one hundred twenty-nine".