129710730240 has 1320 divisors, whose sum is σ = 583475275152. Its totient is φ = 27311800320.

The previous prime is 129710730217. The next prime is 129710730271. The reversal of 129710730240 is 42037017921.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 129710730195 and 129710730204.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 264176395 + ... + 264176885.

Almost surely, 2^129710730240 is an apocalyptic number.

129710730240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129710730240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291737637576).

129710730240 is an abundant number, since it is smaller than the sum of its proper divisors (453764544912).

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

129710730240 is a wasteful number, since it uses less digits than its factorization.

129710730240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555 (or 521 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The spelling of 129710730240 in words is "one hundred twenty-nine billion, seven hundred ten million, seven hundred thirty thousand, two hundred forty".