128647000442 has 8 divisors (see below), whose sum is σ = 193022992116. Its totient is φ = 64306003072.

The previous prime is 128647000441. The next prime is 128647000451. The reversal of 128647000442 is 244000746821.

It can be written as a sum of positive squares in 2 ways, for example, as 127971468361 + 675532081 = 357731^2 + 25991^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 128647000396 and 128647000405.

It is not an unprimeable number, because it can be changed into a prime (128647000441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8739383 + ... + 8754090.

Almost surely, 2^128647000442 is an apocalyptic number.

128647000442 is a deficient number, since it is larger than the sum of its proper divisors (64375991674).

128647000442 is a wasteful number, since it uses less digits than its factorization.

128647000442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17497152.

The product of its (nonzero) digits is 86016, while the sum is 38.

The spelling of 128647000442 in words is "one hundred twenty-eight billion, six hundred forty-seven million, four hundred forty-two", and thus it is an aban number.