128478301 has 4 divisors (see below), whose sum is σ = 146832352. Its totient is φ = 110124252.

The previous prime is 128478283. The next prime is 128478313. The reversal of 128478301 is 103874821.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 128478301 - 2⁵ = 128478269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128478001) 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, 9177015 + ... + 9177028.

It is an arithmetic number, because the mean of its divisors is an integer number (36708088).

Almost surely, 2^128478301 is an apocalyptic number.

It is an amenable number.

128478301 is a deficient number, since it is larger than the sum of its proper divisors (18354051).

128478301 is an equidigital number, since it uses as much as digits as its factorization.

128478301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18354050.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 128478301 is about 11334.8269064860. The cubic root of 128478301 is about 504.5953704182.

The spelling of 128478301 in words is "one hundred twenty-eight million, four hundred seventy-eight thousand, three hundred one".