128345741 has 4 divisors (see below), whose sum is σ = 135100800. Its totient is φ = 121590684.

The previous prime is 128345729. The next prime is 128345747. The reversal of 128345741 is 147543821.

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 a cyclic number.

It is not a de Polignac number, because 128345741 - 2¹⁰ = 128344717 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 (128345747) 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, 3377501 + ... + 3377538.

It is an arithmetic number, because the mean of its divisors is an integer number (33775200).

Almost surely, 2^128345741 is an apocalyptic number.

It is an amenable number.

128345741 is a deficient number, since it is larger than the sum of its proper divisors (6755059).

128345741 is an equidigital number, since it uses as much as digits as its factorization.

128345741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6755058.

The product of its digits is 26880, while the sum is 35.

The square root of 128345741 is about 11328.9779327175. The cubic root of 128345741 is about 504.4217686512.

The spelling of 128345741 in words is "one hundred twenty-eight million, three hundred forty-five thousand, seven hundred forty-one".