129106320 has 320 divisors, whose sum is σ = 492158976. Its totient is φ = 27371520.

The previous prime is 129106319. The next prime is 129106343. The reversal of 129106320 is 23601921.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1926927 + ... + 1926993.

Almost surely, 2^129106320 is an apocalyptic number.

129106320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129106320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246079488).

129106320 is an abundant number, since it is smaller than the sum of its proper divisors (363052656).

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

129106320 is a wasteful number, since it uses less digits than its factorization.

129106320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 129106320 is about 11362.4962046198. The cubic root of 129106320 is about 505.4162108058.

The spelling of 129106320 in words is "one hundred twenty-nine million, one hundred six thousand, three hundred twenty".