841240 has 16 divisors (see below), whose sum is σ = 1892880. Its totient is φ = 336480.

The previous prime is 841237. The next prime is 841241. The reversal of 841240 is 42148.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (841241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10476 + ... + 10555.

It is an arithmetic number, because the mean of its divisors is an integer number (118305).

2⁸⁴¹²⁴⁰ is an apocalyptic number.

It is an amenable number.

841240 is an abundant number, since it is smaller than the sum of its proper divisors (1051640).

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

841240 is a wasteful number, since it uses less digits than its factorization.

841240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21042 (or 21038 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 841240 is about 917.1913649833. The cubic root of 841240 is about 94.4002848790.

Adding to 841240 its reverse (42148), we get a palindrome (883388).

It can be divided in two parts, 841 and 240, that added together give a triangular number (1081 = T₄₆).

The spelling of 841240 in words is "eight hundred forty-one thousand, two hundred forty".