129281282 has 48 divisors (see below), whose sum is σ = 226890720. Its totient is φ = 55036800.

The previous prime is 129281279. The next prime is 129281287. The reversal of 129281282 is 282182921.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (129281287) 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 23 ways as a sum of consecutive naturals, for example, 263057 + ... + 263547.

It is an arithmetic number, because the mean of its divisors is an integer number (4726890).

Almost surely, 2^129281282 is an apocalyptic number.

129281282 is a deficient number, since it is larger than the sum of its proper divisors (97609438).

129281282 is a wasteful number, since it uses less digits than its factorization.

129281282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579 (or 566 counting only the distinct ones).

The product of its digits is 9216, while the sum is 35.

The square root of 129281282 is about 11370.1926984550. The cubic root of 129281282 is about 505.6444173352.

The spelling of 129281282 in words is "one hundred twenty-nine million, two hundred eighty-one thousand, two hundred eighty-two".