2041405 has 8 divisors (see below), whose sum is σ = 2457432. Its totient is φ = 1627968.

The previous prime is 2041387. The next prime is 2041421. The reversal of 2041405 is 5041402.

2041405 is nontrivially palindromic in base 4.

It can be written as a sum of positive squares in 4 ways, for example, as 306916 + 1734489 = 554^2 + 1317^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2041405 - 2¹¹ = 2039357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2419 + ... + 3151.

It is an arithmetic number, because the mean of its divisors is an integer number (307179).

2^2041405 is an apocalyptic number.

It is an amenable number.

2041405 is a deficient number, since it is larger than the sum of its proper divisors (416027).

2041405 is an equidigital number, since it uses as much as digits as its factorization.

2041405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 2041405 is about 1428.7774494301. Note that the first 3 decimals coincide. The cubic root of 2041405 is about 126.8556236436.

Adding to 2041405 its reverse (5041402), we get a palindrome (7082807).

It can be divided in two parts, 20 and 41405, that multiplied together give a square (828100 = 910²).

The spelling of 2041405 in words is "two million, forty-one thousand, four hundred five".