129842275 has 6 divisors (see below), whose sum is σ = 161004452. Its totient is φ = 103873800.

The previous prime is 129842233. The next prime is 129842299. The reversal of 129842275 is 572248921.

It is not a de Polignac number, because 129842275 - 2⁷ = 129842147 is a prime.

It is a Duffinian number.

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 5 ways as a sum of consecutive naturals, for example, 2596821 + ... + 2596870.

Almost surely, 2^129842275 is an apocalyptic number.

129842275 is a deficient number, since it is larger than the sum of its proper divisors (31162177).

129842275 is an equidigital number, since it uses as much as digits as its factorization.

129842275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5193701 (or 5193696 counting only the distinct ones).

The product of its digits is 80640, while the sum is 40.

The square root of 129842275 is about 11394.8354529585. The cubic root of 129842275 is about 506.3747464773.

The spelling of 129842275 in words is "one hundred twenty-nine million, eight hundred forty-two thousand, two hundred seventy-five".