129428034200 has 48 divisors (see below), whose sum is σ = 316758093000. Its totient is φ = 49046411520.

The previous prime is 129428034173. The next prime is 129428034221. The reversal of 129428034200 is 2430824921.

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, 17026205 + ... + 17033804.

Almost surely, 2^129428034200 is an apocalyptic number.

129428034200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129428034200 is an abundant number, since it is smaller than the sum of its proper divisors (187330058800).

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

129428034200 is a wasteful number, since it uses less digits than its factorization.

129428034200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34060044 (or 34060035 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The spelling of 129428034200 in words is "one hundred twenty-nine billion, four hundred twenty-eight million, thirty-four thousand, two hundred".