129842944 has 108 divisors (see below), whose sum is σ = 329251608. Its totient is φ = 50534400.

The previous prime is 129842917. The next prime is 129842971. The reversal of 129842944 is 449248921.

It is an interprime number because it is at equal distance from previous prime (129842917) and next prime (129842971).

It is a self number, because there is not a number n which added to its sum of digits gives 129842944.

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, 137514 + ... + 138454.

It is an arithmetic number, because the mean of its divisors is an integer number (3048626).

Almost surely, 2^129842944 is an apocalyptic number.

129842944 is a gapful number since it is divisible by the number (14) 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 129842944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164625804).

129842944 is an abundant number, since it is smaller than the sum of its proper divisors (199408664).

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

129842944 is an equidigital number, since it uses as much as digits as its factorization.

129842944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982 (or 961 counting only the distinct ones).

The product of its digits is 165888, while the sum is 43.

The square root of 129842944 is about 11394.8648083248. The cubic root of 129842944 is about 506.3756161584.

The spelling of 129842944 in words is "one hundred twenty-nine million, eight hundred forty-two thousand, nine hundred forty-four".