34128145 has 4 divisors (see below), whose sum is σ = 40953780. Its totient is φ = 27302512.

The previous prime is 34128119. The next prime is 34128167. The reversal of 34128145 is 54182143.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54182143 = 1031 ⋅52553.

It can be written as a sum of positive squares in 2 ways, for example, as 24690961 + 9437184 = 4969^2 + 3072^2 .

It is a cyclic number.

It is not a de Polignac number, because 34128145 - 2¹¹ = 34126097 is a prime.

It is a super-2 number, since 2×34128145² = 2329460562282050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3412810 + ... + 3412819.

It is an arithmetic number, because the mean of its divisors is an integer number (10238445).

Almost surely, 2^34128145 is an apocalyptic number.

It is an amenable number.

34128145 is a deficient number, since it is larger than the sum of its proper divisors (6825635).

34128145 is an equidigital number, since it uses as much as digits as its factorization.

34128145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6825634.

The product of its digits is 3840, while the sum is 28.

The square root of 34128145 is about 5841.9299037219. The cubic root of 34128145 is about 324.3676699252.

The spelling of 34128145 in words is "thirty-four million, one hundred twenty-eight thousand, one hundred forty-five".