129286141 has 2 divisors, whose sum is σ = 129286142. Its totient is φ = 129286140.

The previous prime is 129286109. The next prime is 129286189. The reversal of 129286141 is 141682921.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91278916 + 38007225 = 9554^2 + 6165^2 .

It is a cyclic number.

It is not a de Polignac number, because 129286141 - 2⁵ = 129286109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 129286097 and 129286106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129287141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64643070 + 64643071.

It is an arithmetic number, because the mean of its divisors is an integer number (64643071).

Almost surely, 2^129286141 is an apocalyptic number.

It is an amenable number.

129286141 is a deficient number, since it is larger than the sum of its proper divisors (1).

129286141 is an equidigital number, since it uses as much as digits as its factorization.

129286141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 34.

The square root of 129286141 is about 11370.4063691673. The cubic root of 129286141 is about 505.6507520894.

The spelling of 129286141 in words is "one hundred twenty-nine million, two hundred eighty-six thousand, one hundred forty-one".