841040 has 20 divisors (see below), whose sum is σ = 1955604. Its totient is φ = 336384.

The previous prime is 841021. The next prime is 841063. The reversal of 841040 is 40148.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 87616 + 753424 = 296^2 + 868^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (17) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5177 + ... + 5336.

2⁸⁴¹⁰⁴⁰ is an apocalyptic number.

841040 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

841040 is an abundant number, since it is smaller than the sum of its proper divisors (1114564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

841040 is a wasteful number, since it uses less digits than its factorization.

841040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10526 (or 10520 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 841040 is about 917.0823300010. The cubic root of 841040 is about 94.3928032434.

Adding to 841040 its reverse (40148), we get a palindrome (881188).

It can be divided in two parts, 8410 and 40, that multiplied together give a square (336400 = 580²).

The spelling of 841040 in words is "eight hundred forty-one thousand, forty".