129834172 has 24 divisors (see below), whose sum is σ = 255328416. Its totient is φ = 57317568.

The previous prime is 129834143. The next prime is 129834197. The reversal of 129834172 is 271438921.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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, 53083 + ... + 55474.

It is an arithmetic number, because the mean of its divisors is an integer number (10638684).

Almost surely, 2^129834172 is an apocalyptic number.

It is an amenable number.

129834172 is a deficient number, since it is larger than the sum of its proper divisors (125494244).

129834172 is a wasteful number, since it uses less digits than its factorization.

129834172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108597 (or 108595 counting only the distinct ones).

The product of its digits is 24192, while the sum is 37.

The square root of 129834172 is about 11394.4798915966. The cubic root of 129834172 is about 506.3642125688.

The spelling of 129834172 in words is "one hundred twenty-nine million, eight hundred thirty-four thousand, one hundred seventy-two".