128434325 has 6 divisors (see below), whose sum is σ = 159258594. Its totient is φ = 102747440.

The previous prime is 128434291. The next prime is 128434343. The reversal of 128434325 is 523434821.

It can be written as a sum of positive squares in 3 ways, for example, as 35832196 + 92602129 = 5986^2 + 9623^2 .

It is not a de Polignac number, because 128434325 - 2⁶ = 128434261 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128434291 and 128434300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2568662 + ... + 2568711.

It is an arithmetic number, because the mean of its divisors is an integer number (26543099).

Almost surely, 2^128434325 is an apocalyptic number.

It is an amenable number.

128434325 is a deficient number, since it is larger than the sum of its proper divisors (30824269).

128434325 is an equidigital number, since it uses as much as digits as its factorization.

128434325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5137383 (or 5137378 counting only the distinct ones).

The product of its digits is 23040, while the sum is 32.

The square root of 128434325 is about 11332.8868784613. The cubic root of 128434325 is about 504.5377922952.

The spelling of 128434325 in words is "one hundred twenty-eight million, four hundred thirty-four thousand, three hundred twenty-five".