205720041 has 8 divisors (see below), whose sum is σ = 280672480. Its totient is φ = 133957152.

The previous prime is 205720033. The next prime is 205720091. The reversal of 205720041 is 140027502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 205720041 - 2³ = 205720033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205720091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 797236 + ... + 797493.

It is an arithmetic number, because the mean of its divisors is an integer number (35084060).

Almost surely, 2^205720041 is an apocalyptic number.

It is an amenable number.

205720041 is a deficient number, since it is larger than the sum of its proper divisors (74952439).

205720041 is a wasteful number, since it uses less digits than its factorization.

205720041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1594775.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 205720041 is about 14342.9439446719. The cubic root of 205720041 is about 590.3263931846.

Adding to 205720041 its reverse (140027502), we get a palindrome (345747543).

The spelling of 205720041 in words is "two hundred five million, seven hundred twenty thousand, forty-one".