4065145 has 16 divisors (see below), whose sum is σ = 5869440. Its totient is φ = 2640384.

The previous prime is 4065137. The next prime is 4065157. The reversal of 4065145 is 5415604.

It is a cyclic number.

It is not a de Polignac number, because 4065145 - 2³ = 4065137 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2392 + ... + 3721.

It is an arithmetic number, because the mean of its divisors is an integer number (366840).

Almost surely, 2^4065145 is an apocalyptic number.

It is an amenable number.

4065145 is a deficient number, since it is larger than the sum of its proper divisors (1804295).

4065145 is a wasteful number, since it uses less digits than its factorization.

4065145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6144.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 4065145 is about 2016.2204740554. The cubic root of 4065145 is about 159.5972291360.

The spelling of 4065145 in words is "four million, sixty-five thousand, one hundred forty-five".