129159198 has 120 divisors (see below), whose sum is σ = 344132712. Its totient is φ = 36088416.

The previous prime is 129159187. The next prime is 129159211. The reversal of 129159198 is 891951921.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 420561 + ... + 420867.

Almost surely, 2^129159198 is an apocalyptic number.

129159198 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 129159198, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172066356).

129159198 is an abundant number, since it is smaller than the sum of its proper divisors (214973514).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129159198 is a wasteful number, since it uses less digits than its factorization.

129159198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388 (or 372 counting only the distinct ones).

The product of its digits is 58320, while the sum is 45.

The square root of 129159198 is about 11364.8228318791. The cubic root of 129159198 is about 505.4852023951.

The spelling of 129159198 in words is "one hundred twenty-nine million, one hundred fifty-nine thousand, one hundred ninety-eight".