129580443420 has 192 divisors, whose sum is σ = 377145853056. Its totient is φ = 33218887680.

The previous prime is 129580443397. The next prime is 129580443457. The reversal of 129580443420 is 24344085921.

It is a happy number.

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 63 ways as a sum of consecutive naturals, for example, 61324284 + ... + 61326396.

It is an arithmetic number, because the mean of its divisors is an integer number (1964301318).

Almost surely, 2^129580443420 is an apocalyptic number.

129580443420 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 129580443420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188572926528).

129580443420 is an abundant number, since it is smaller than the sum of its proper divisors (247565409636).

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

129580443420 is a wasteful number, since it uses less digits than its factorization.

129580443420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2520 (or 2518 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The spelling of 129580443420 in words is "one hundred twenty-nine billion, five hundred eighty million, four hundred forty-three thousand, four hundred twenty".