129767147 has 8 divisors (see below), whose sum is σ = 134111232. Its totient is φ = 125433000.

The previous prime is 129767129. The next prime is 129767153. The reversal of 129767147 is 741767921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 129767147 - 2¹⁰ = 129766123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129767098 and 129767107.

It is not an unprimeable number, because it can be changed into a prime (129767107) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 31772 + ... + 35622.

It is an arithmetic number, because the mean of its divisors is an integer number (16763904).

Almost surely, 2^129767147 is an apocalyptic number.

129767147 is a deficient number, since it is larger than the sum of its proper divisors (4344085).

129767147 is a wasteful number, since it uses less digits than its factorization.

129767147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4969.

The product of its digits is 148176, while the sum is 44.

The square root of 129767147 is about 11391.5383947911. The cubic root of 129767147 is about 506.2770631877.

The spelling of 129767147 in words is "one hundred twenty-nine million, seven hundred sixty-seven thousand, one hundred forty-seven".