209041 has 4 divisors (see below), whose sum is σ = 238912. Its totient is φ = 179172.

The previous prime is 209039. The next prime is 209063. The reversal of 209041 is 140902.

209041 = 49² + 50² + ... + 90².

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 140902 = 2 ⋅70451.

It is not a de Polignac number, because 209041 - 2¹ = 209039 is a prime.

It is a Duffinian number.

209041 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (209021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14925 + ... + 14938.

It is an arithmetic number, because the mean of its divisors is an integer number (59728).

2²⁰⁹⁰⁴¹ is an apocalyptic number.

It is an amenable number.

209041 is a deficient number, since it is larger than the sum of its proper divisors (29871).

209041 is an equidigital number, since it uses as much as digits as its factorization.

209041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29870.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 209041 is about 457.2100173881. The cubic root of 209041 is about 59.3486017461.

Adding to 209041 its reverse (140902), we get a palindrome (349943).

The spelling of 209041 in words is "two hundred nine thousand, forty-one".