109032145 has 4 divisors (see below), whose sum is σ = 130838580. Its totient is φ = 87225712.

The previous prime is 109032139. The next prime is 109032149. The reversal of 109032145 is 541230901.

109032145 = 7383² + 7384².

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 541230901 = 317 ⋅1707353.

It can be written as a sum of positive squares in 2 ways, for example, as 54508689 + 54523456 = 7383^2 + 7384^2 .

It is a cyclic number.

It is not a de Polignac number, because 109032145 - 2¹³ = 109023953 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (109032149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10903210 + ... + 10903219.

It is an arithmetic number, because the mean of its divisors is an integer number (32709645).

Almost surely, 2^109032145 is an apocalyptic number.

109032145 is the 7384-th centered square number.

It is an amenable number.

109032145 is a deficient number, since it is larger than the sum of its proper divisors (21806435).

109032145 is an equidigital number, since it uses as much as digits as its factorization.

109032145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21806434.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 109032145 is about 10441.8458617239. The cubic root of 109032145 is about 477.7325712992.

The spelling of 109032145 in words is "one hundred nine million, thirty-two thousand, one hundred forty-five".