4450120145 has 4 divisors (see below), whose sum is σ = 5340144180. Its totient is φ = 3560096112.

The previous prime is 4450120121. The next prime is 4450120183. The reversal of 4450120145 is 5410210544.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1045164241 + 3404955904 = 32329^2 + 58352^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4450120145 is a prime.

It is an unprimeable number.

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, 445012010 + ... + 445012019.

It is an arithmetic number, because the mean of its divisors is an integer number (1335036045).

Almost surely, 2^4450120145 is an apocalyptic number.

It is an amenable number.

4450120145 is a deficient number, since it is larger than the sum of its proper divisors (890024035).

4450120145 is an equidigital number, since it uses as much as digits as its factorization.

4450120145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890024034.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 4450120145 is about 66709.2208394012. The cubic root of 4450120145 is about 1644.8409592395.

Adding to 4450120145 its reverse (5410210544), we get a palindrome (9860330689).

It can be divided in two parts, 44501 and 20145, that added together give a palindrome (64646).

The spelling of 4450120145 in words is "four billion, four hundred fifty million, one hundred twenty thousand, one hundred forty-five".