129383424 has 132 divisors (see below), whose sum is σ = 380005080. Its totient is φ = 42393600.

The previous prime is 129383411. The next prime is 129383453. The reversal of 129383424 is 424383921.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 930747 + ... + 930885.

Almost surely, 2^129383424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129383424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190002540).

129383424 is an abundant number, since it is smaller than the sum of its proper divisors (250621656).

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

129383424 is a wasteful number, since it uses less digits than its factorization.

129383424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266 (or 245 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 129383424 is about 11374.6834681234. The cubic root of 129383424 is about 505.7775480700. Note that the first 3 decimals are identical.

The spelling of 129383424 in words is "one hundred twenty-nine million, three hundred eighty-three thousand, four hundred twenty-four".