129285230 has 16 divisors (see below), whose sum is σ = 236529504. Its totient is φ = 50866080.

The previous prime is 129285217. The next prime is 129285269. The reversal of 129285230 is 32582921.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105362 + ... + 106581.

It is an arithmetic number, because the mean of its divisors is an integer number (14783094).

Almost surely, 2^129285230 is an apocalyptic number.

129285230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129285230 is a deficient number, since it is larger than the sum of its proper divisors (107244274).

129285230 is a wasteful number, since it uses less digits than its factorization.

129285230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212011.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 129285230 is about 11370.3663089630. The cubic root of 129285230 is about 505.6495644166.

The spelling of 129285230 in words is "one hundred twenty-nine million, two hundred eighty-five thousand, two hundred thirty".