129648145 has 16 divisors (see below), whose sum is σ = 171408960. Its totient is φ = 93352000.

The previous prime is 129648133. The next prime is 129648161. The reversal of 129648145 is 541846921.

It is not a de Polignac number, because 129648145 - 2²¹ = 127550993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 129648098 and 129648107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6115 + ... + 17224.

It is an arithmetic number, because the mean of its divisors is an integer number (10713060).

Almost surely, 2^129648145 is an apocalyptic number.

It is an amenable number.

129648145 is a deficient number, since it is larger than the sum of its proper divisors (41760815).

129648145 is a wasteful number, since it uses less digits than its factorization.

129648145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23456.

The product of its digits is 69120, while the sum is 40.

The square root of 129648145 is about 11386.3139338418. The cubic root of 129648145 is about 506.1222566476.

The spelling of 129648145 in words is "one hundred twenty-nine million, six hundred forty-eight thousand, one hundred forty-five".