205120441 has 4 divisors (see below), whose sum is σ = 208990692. Its totient is φ = 201250192.

The previous prime is 205120387. The next prime is 205120457. The reversal of 205120441 is 144021502.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 144021502 = 2 ⋅72010751.

It can be written as a sum of positive squares in 2 ways, for example, as 185504400 + 19616041 = 13620^2 + 4429^2 .

It is a cyclic number.

It is not a de Polignac number, because 205120441 - 2⁷ = 205120313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205120471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1935046 + ... + 1935151.

It is an arithmetic number, because the mean of its divisors is an integer number (52247673).

Almost surely, 2^205120441 is an apocalyptic number.

It is an amenable number.

205120441 is a deficient number, since it is larger than the sum of its proper divisors (3870251).

205120441 is an equidigital number, since it uses as much as digits as its factorization.

205120441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3870250.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 205120441 is about 14322.0264278488. The cubic root of 205120441 is about 589.7523052963.

Adding to 205120441 its reverse (144021502), we get a palindrome (349141943).

The spelling of 205120441 in words is "two hundred five million, one hundred twenty thousand, four hundred forty-one".