128442301 has 4 divisors (see below), whose sum is σ = 138322492. Its totient is φ = 118562112.

The previous prime is 128442277. The next prime is 128442311. The reversal of 128442301 is 103244821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 103244821 = 227 ⋅454823.

It can be written as a sum of positive squares in 2 ways, for example, as 22372900 + 106069401 = 4730^2 + 10299^2 .

It is a cyclic number.

It is not a de Polignac number, because 128442301 - 2⁷ = 128442173 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 (128442311) 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, 4940076 + ... + 4940101.

It is an arithmetic number, because the mean of its divisors is an integer number (34580623).

Almost surely, 2^128442301 is an apocalyptic number.

It is an amenable number.

128442301 is a deficient number, since it is larger than the sum of its proper divisors (9880191).

128442301 is an equidigital number, since it uses as much as digits as its factorization.

128442301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9880190.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 128442301 is about 11333.2387692133. The cubic root of 128442301 is about 504.5482363104.

The spelling of 128442301 in words is "one hundred twenty-eight million, four hundred forty-two thousand, three hundred one".