129832120 has 32 divisors (see below), whose sum is σ = 318679920. Its totient is φ = 47211520.

The previous prime is 129832103. The next prime is 129832121. The reversal of 129832120 is 21238921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129832121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147097 + ... + 147976.

Almost surely, 2^129832120 is an apocalyptic number.

129832120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129832120 is an abundant number, since it is smaller than the sum of its proper divisors (188847800).

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

129832120 is a wasteful number, since it uses less digits than its factorization.

129832120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295095 (or 295091 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 129832120 is about 11394.3898476399. The cubic root of 129832120 is about 506.3615448971.

The spelling of 129832120 in words is "one hundred twenty-nine million, eight hundred thirty-two thousand, one hundred twenty".