129286146 has 32 divisors (see below), whose sum is σ = 296928000. Its totient is φ = 37115280.

The previous prime is 129286141. The next prime is 129286189. The reversal of 129286146 is 641682921.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (129286141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50296 + ... + 52803.

It is an arithmetic number, because the mean of its divisors is an integer number (9279000).

Almost surely, 2^129286146 is an apocalyptic number.

129286146 is an abundant number, since it is smaller than the sum of its proper divisors (167641854).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129286146 is a wasteful number, since it uses less digits than its factorization.

129286146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103134.

The product of its digits is 41472, while the sum is 39.

The square root of 129286146 is about 11370.4065890363. The cubic root of 129286146 is about 505.6507586079.

The spelling of 129286146 in words is "one hundred twenty-nine million, two hundred eighty-six thousand, one hundred forty-six".