128475242 has 8 divisors (see below), whose sum is σ = 220243296. Its totient is φ = 55060812.

The previous prime is 128475241. The next prime is 128475257. The reversal of 128475242 is 242574821.

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

It is not an unprimeable number, because it can be changed into a prime (128475241) 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, 4588388 + ... + 4588415.

It is an arithmetic number, because the mean of its divisors is an integer number (27530412).

Almost surely, 2^128475242 is an apocalyptic number.

128475242 is a deficient number, since it is larger than the sum of its proper divisors (91768054).

128475242 is an equidigital number, since it uses as much as digits as its factorization.

128475242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9176812.

The product of its digits is 35840, while the sum is 35.

The square root of 128475242 is about 11334.6919675834. The cubic root of 128475242 is about 504.5913656707.

The spelling of 128475242 in words is "one hundred twenty-eight million, four hundred seventy-five thousand, two hundred forty-two".