129442384 has 20 divisors (see below), whose sum is σ = 256628416. Its totient is φ = 63215712.

The previous prime is 129442361. The next prime is 129442387. The reversal of 129442384 is 483244921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129442387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93384 + ... + 94759.

Almost surely, 2^129442384 is an apocalyptic number.

It is an amenable number.

129442384 is a deficient number, since it is larger than the sum of its proper divisors (127186032).

129442384 is a wasteful number, since it uses less digits than its factorization.

129442384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188194 (or 188188 counting only the distinct ones).

The product of its digits is 55296, while the sum is 37.

The square root of 129442384 is about 11377.2748934004. The cubic root of 129442384 is about 505.8543639782.

The spelling of 129442384 in words is "one hundred twenty-nine million, four hundred forty-two thousand, three hundred eighty-four".