1043681 has 12 divisors (see below), whose sum is σ = 1160172. Its totient is φ = 935424.

The previous prime is 1043663. The next prime is 1043683. The reversal of 1043681 is 1863401.

It can be written as a sum of positive squares in 6 ways, for example, as 43681 + 1000000 = 209^2 + 1000^2 .

It is not a de Polignac number, because 1043681 - 2⁶ = 1043617 is a prime.

It is a super-2 number, since 2×1043681² = 2178540059522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1043683) 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 11 ways as a sum of consecutive naturals, for example, 14261 + ... + 14333.

It is an arithmetic number, because the mean of its divisors is an integer number (96681).

2^1043681 is an apocalyptic number.

It is an amenable number.

1043681 is a deficient number, since it is larger than the sum of its proper divisors (116491).

1043681 is an equidigital number, since it uses as much as digits as its factorization.

1043681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 1043681 is about 1021.6070673209. The cubic root of 1043681 is about 101.4353329582.

The spelling of 1043681 in words is "one million, forty-three thousand, six hundred eighty-one".