129396200 has 24 divisors (see below), whose sum is σ = 300846630. Its totient is φ = 51758400.

The previous prime is 129396193. The next prime is 129396209. The reversal of 129396200 is 2693921.

It can be written as a sum of positive squares in 3 ways, for example, as 62188996 + 67207204 = 7886^2 + 8198^2 .

It is not an unprimeable number, because it can be changed into a prime (129396209) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 323291 + ... + 323690.

Almost surely, 2^129396200 is an apocalyptic number.

129396200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129396200 is an abundant number, since it is smaller than the sum of its proper divisors (171450430).

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

129396200 is a wasteful number, since it uses less digits than its factorization.

129396200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646997 (or 646988 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 129396200 is about 11375.2450523055. The cubic root of 129396200 is about 505.7941952342.

The spelling of 129396200 in words is "one hundred twenty-nine million, three hundred ninety-six thousand, two hundred".