129740286400 has 84 divisors (see below), whose sum is σ = 319325030640. Its totient is φ = 51882649600.

The previous prime is 129740286383. The next prime is 129740286419. The reversal of 129740286400 is 4682047921.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8121621 + ... + 8137579.

It is an arithmetic number, because the mean of its divisors is an integer number (3801488460).

Almost surely, 2^129740286400 is an apocalyptic number.

129740286400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129740286400 is an abundant number, since it is smaller than the sum of its proper divisors (189584744240).

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

129740286400 is a wasteful number, since it uses less digits than its factorization.

129740286400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21062 (or 21047 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The spelling of 129740286400 in words is "one hundred twenty-nine billion, seven hundred forty million, two hundred eighty-six thousand, four hundred".