128962443 has 8 divisors (see below), whose sum is σ = 181000000. Its totient is φ = 81449928.

The previous prime is 128962441. The next prime is 128962453. The reversal of 128962443 is 344269821.

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

It is not a de Polignac number, because 128962443 - 2¹ = 128962441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128962441) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1131193 + ... + 1131306.

It is an arithmetic number, because the mean of its divisors is an integer number (22625000).

Almost surely, 2^128962443 is an apocalyptic number.

128962443 is a deficient number, since it is larger than the sum of its proper divisors (52037557).

128962443 is a wasteful number, since it uses less digits than its factorization.

128962443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2262521.

The product of its digits is 82944, while the sum is 39.

The square root of 128962443 is about 11356.1632165094. The cubic root of 128962443 is about 505.2283945489.

The spelling of 128962443 in words is "one hundred twenty-eight million, nine hundred sixty-two thousand, four hundred forty-three".