129767047 has 8 divisors (see below), whose sum is σ = 133122816. Its totient is φ = 126436152.

The previous prime is 129767039. The next prime is 129767087. The reversal of 129767047 is 740767921.

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 129767047 - 2³ = 129767039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129766994 and 129767012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129767087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4588 + ... + 16750.

It is an arithmetic number, because the mean of its divisors is an integer number (16640352).

Almost surely, 2^129767047 is an apocalyptic number.

129767047 is a deficient number, since it is larger than the sum of its proper divisors (3355769).

129767047 is a wasteful number, since it uses less digits than its factorization.

129767047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12437.

The product of its (nonzero) digits is 148176, while the sum is 43.

The square root of 129767047 is about 11391.5340055675. The cubic root of 129767047 is about 506.2769331401.

It can be divided in two parts, 1297670 and 47, that multiplied together give a triangular number (60990490 = T₁₁₀₄₄).

The spelling of 129767047 in words is "one hundred twenty-nine million, seven hundred sixty-seven thousand, forty-seven".