204217041 has 16 divisors (see below), whose sum is σ = 311483264. Its totient is φ = 116584704.

The previous prime is 204216979. The next prime is 204217049. The reversal of 204217041 is 140712402.

It is a happy number.

It is not a de Polignac number, because 204217041 - 2¹¹ = 204214993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204216999 and 204217017.

It is not an unprimeable number, because it can be changed into a prime (204217049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21465 + ... + 29481.

It is an arithmetic number, because the mean of its divisors is an integer number (19467704).

Almost surely, 2^204217041 is an apocalyptic number.

204217041 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

204217041 is a deficient number, since it is larger than the sum of its proper divisors (107266223).

204217041 is a wasteful number, since it uses less digits than its factorization.

204217041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9240.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 204217041 is about 14290.4527919867. The cubic root of 204217041 is about 588.8852272085.

Adding to 204217041 its reverse (140712402), we get a palindrome (344929443).

The spelling of 204217041 in words is "two hundred four million, two hundred seventeen thousand, forty-one".