120205541 has 4 divisors (see below), whose sum is σ = 120562572. Its totient is φ = 119848512.

The previous prime is 120205517. The next prime is 120205549. The reversal of 120205541 is 145502021.

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 26522500 + 93683041 = 5150^2 + 9679^2 .

It is a cyclic number.

It is not a de Polignac number, because 120205541 - 2¹⁰ = 120204517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120205549) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 178010 + ... + 178683.

It is an arithmetic number, because the mean of its divisors is an integer number (30140643).

Almost surely, 2^120205541 is an apocalyptic number.

It is an amenable number.

120205541 is a deficient number, since it is larger than the sum of its proper divisors (357031).

120205541 is an equidigital number, since it uses as much as digits as its factorization.

120205541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357030.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 120205541 is about 10963.8287564153. The cubic root of 120205541 is about 493.5238696180.

Adding to 120205541 its reverse (145502021), we get a palindrome (265707562).

The spelling of 120205541 in words is "one hundred twenty million, two hundred five thousand, five hundred forty-one".