129244995 has 24 divisors (see below), whose sum is σ = 244391472. Its totient is φ = 62664000.

The previous prime is 129244963. The next prime is 129245009. The reversal of 129244995 is 599442921.

It is not a de Polignac number, because 129244995 - 2⁵ = 129244963 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 129244995.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 130056 + ... + 131045.

It is an arithmetic number, because the mean of its divisors is an integer number (10182978).

Almost surely, 2^129244995 is an apocalyptic number.

129244995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

129244995 is a deficient number, since it is larger than the sum of its proper divisors (115146477).

129244995 is a wasteful number, since it uses less digits than its factorization.

129244995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261123 (or 261120 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 129244995 is about 11368.5968791228. The cubic root of 129244995 is about 505.5971043867.

The spelling of 129244995 in words is "one hundred twenty-nine million, two hundred forty-four thousand, nine hundred ninety-five".