128730341 has 4 divisors (see below), whose sum is σ = 136302732. Its totient is φ = 121157952.

The previous prime is 128730323. The next prime is 128730353. The reversal of 128730341 is 143037821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 143037821 = 1283 ⋅111487.

It can be written as a sum of positive squares in 2 ways, for example, as 101586241 + 27144100 = 10079^2 + 5210^2 .

It is a cyclic number.

It is not a de Polignac number, because 128730341 - 2¹⁰ = 128729317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128730311) 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, 3786170 + ... + 3786203.

It is an arithmetic number, because the mean of its divisors is an integer number (34075683).

Almost surely, 2^128730341 is an apocalyptic number.

It is an amenable number.

128730341 is a deficient number, since it is larger than the sum of its proper divisors (7572391).

128730341 is an equidigital number, since it uses as much as digits as its factorization.

128730341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7572390.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 128730341 is about 11345.9394057962. The cubic root of 128730341 is about 504.9251151909.

The spelling of 128730341 in words is "one hundred twenty-eight million, seven hundred thirty thousand, three hundred forty-one".