129419939250 has 576 divisors, whose sum is σ = 442556974080. Its totient is φ = 27107136000.

The previous prime is 129419939221. The next prime is 129419939267. The reversal of 129419939250 is 52939914921.

129419939250 is a `hidden beast` number, since 1 + 2 + 9 + 419 + 93 + 92 + 50 = 666.

It is a Curzon 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 287 ways as a sum of consecutive naturals, for example, 64936254 + ... + 64938246.

It is an arithmetic number, because the mean of its divisors is an integer number (768328080).

Almost surely, 2^129419939250 is an apocalyptic number.

129419939250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 129419939250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221278487040).

129419939250 is an abundant number, since it is smaller than the sum of its proper divisors (313137034830).

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

129419939250 is a wasteful number, since it uses less digits than its factorization.

129419939250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2080 (or 2060 counting only the distinct ones).

The product of its (nonzero) digits is 1574640, while the sum is 54.

The spelling of 129419939250 in words is "one hundred twenty-nine billion, four hundred nineteen million, nine hundred thirty-nine thousand, two hundred fifty".