129882746 has 48 divisors (see below), whose sum is σ = 242864640. Its totient is φ = 50971680.

The previous prime is 129882743. The next prime is 129882749. The reversal of 129882746 is 647288921.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (129882743) and next prime (129882749).

It is a self number, because there is not a number n which added to its sum of digits gives 129882746.

It is not an unprimeable number, because it can be changed into a prime (129882743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 156260 + ... + 157088.

It is an arithmetic number, because the mean of its divisors is an integer number (5059680).

Almost surely, 2^129882746 is an apocalyptic number.

129882746 is a deficient number, since it is larger than the sum of its proper divisors (112981894).

129882746 is a wasteful number, since it uses less digits than its factorization.

129882746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907 (or 888 counting only the distinct ones).

The product of its digits is 387072, while the sum is 47.

The square root of 129882746 is about 11396.6111629730. The cubic root of 129882746 is about 506.4273522599.

The spelling of 129882746 in words is "one hundred twenty-nine million, eight hundred eighty-two thousand, seven hundred forty-six".