129140802 has 48 divisors (see below), whose sum is σ = 322745280. Its totient is φ = 36554976.

The previous prime is 129140801. The next prime is 129140813. The reversal of 129140802 is 208041921.

It is not an unprimeable number, because it can be changed into a prime (129140801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9033 + ... + 18435.

It is an arithmetic number, because the mean of its divisors is an integer number (6723860).

Almost surely, 2^129140802 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129140802, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161372640).

129140802 is an abundant number, since it is smaller than the sum of its proper divisors (193604478).

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

129140802 is a wasteful number, since it uses less digits than its factorization.

129140802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9527 (or 9524 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 129140802 is about 11364.0134635612. The cubic root of 129140802 is about 505.4612026918.

The spelling of 129140802 in words is "one hundred twenty-nine million, one hundred forty thousand, eight hundred two".