129948161 has 8 divisors (see below), whose sum is σ = 148686720. Its totient is φ = 111253248.

The previous prime is 129948157. The next prime is 129948227. The reversal of 129948161 is 161849921.

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 129948161 - 2² = 129948157 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129948131) 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, 4256 + ... + 16673.

It is an arithmetic number, because the mean of its divisors is an integer number (18585840).

Almost surely, 2^129948161 is an apocalyptic number.

It is an amenable number.

129948161 is a deficient number, since it is larger than the sum of its proper divisors (18738559).

129948161 is an equidigital number, since it uses as much as digits as its factorization.

129948161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21823.

The product of its digits is 31104, while the sum is 41.

The square root of 129948161 is about 11399.4807337878. The cubic root of 129948161 is about 506.5123581242.

The spelling of 129948161 in words is "one hundred twenty-nine million, nine hundred forty-eight thousand, one hundred sixty-one".