129217150 has 24 divisors (see below), whose sum is σ = 245937384. Its totient is φ = 50484000.

The previous prime is 129217141. The next prime is 129217163. The reversal of 129217150 is 51712921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27901 + ... + 32200.

It is an arithmetic number, because the mean of its divisors is an integer number (10247391).

Almost surely, 2^129217150 is an apocalyptic number.

129217150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129217150 is a deficient number, since it is larger than the sum of its proper divisors (116720234).

129217150 is a wasteful number, since it uses less digits than its factorization.

129217150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60156 (or 60151 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 28.

The square root of 129217150 is about 11367.3721677440. The cubic root of 129217150 is about 505.5607925679.

The spelling of 129217150 in words is "one hundred twenty-nine million, two hundred seventeen thousand, one hundred fifty".