129946275 has 30 divisors (see below), whose sum is σ = 240709172. Its totient is φ = 69303600.

The previous prime is 129946237. The next prime is 129946291. The reversal of 129946275 is 572649921.

129946275 is a `hidden beast` number, since 12 + 9 + 9 + 4 + 627 + 5 = 666.

It is not a de Polignac number, because 129946275 - 2¹² = 129942179 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 129946275.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 30061 + ... + 34110.

Almost surely, 2^129946275 is an apocalyptic number.

129946275 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

129946275 is a deficient number, since it is larger than the sum of its proper divisors (110762897).

129946275 is an equidigital number, since it uses as much as digits as its factorization.

129946275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64193 (or 64179 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 129946275 is about 11399.3980104214. The cubic root of 129946275 is about 506.5099076934.

It can be divided in two parts, 1299 and 46275, that added together give a palindrome (47574).

The spelling of 129946275 in words is "one hundred twenty-nine million, nine hundred forty-six thousand, two hundred seventy-five".