128485442 has 8 divisors (see below), whose sum is σ = 195168000. Its totient is φ = 63429444.

The previous prime is 128485417. The next prime is 128485453. The reversal of 128485442 is 244584821.

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 = 128485396 and 128485405.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 406442 + ... + 406757.

It is an arithmetic number, because the mean of its divisors is an integer number (24396000).

Almost surely, 2^128485442 is an apocalyptic number.

128485442 is a deficient number, since it is larger than the sum of its proper divisors (66682558).

128485442 is an equidigital number, since it uses as much as digits as its factorization.

128485442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813280.

The product of its digits is 81920, while the sum is 38.

The square root of 128485442 is about 11335.1419047139. The cubic root of 128485442 is about 504.6047189457.

The spelling of 128485442 in words is "one hundred twenty-eight million, four hundred eighty-five thousand, four hundred forty-two".