129162929 has 8 divisors (see below), whose sum is σ = 148969920. Its totient is φ = 109694736.

The previous prime is 129162919. The next prime is 129162953. The reversal of 129162929 is 929261921.

It is a happy number.

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 129162929 - 2¹² = 129158833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129162919) 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, 83879 + ... + 85404.

It is an arithmetic number, because the mean of its divisors is an integer number (18621240).

Almost surely, 2^129162929 is an apocalyptic number.

It is an amenable number.

129162929 is a deficient number, since it is larger than the sum of its proper divisors (19806991).

129162929 is a wasteful number, since it uses less digits than its factorization.

129162929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169399.

The product of its digits is 34992, while the sum is 41.

The square root of 129162929 is about 11364.9869775552. The cubic root of 129162929 is about 505.4900696368.

The spelling of 129162929 in words is "one hundred twenty-nine million, one hundred sixty-two thousand, nine hundred twenty-nine".