840541 has 16 divisors (see below), whose sum is σ = 987840. Its totient is φ = 708480.

The previous prime is 840523. The next prime is 840547. The reversal of 840541 is 145048.

It is not a de Polignac number, because 840541 - 2¹⁷ = 709469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10086 + ... + 10168.

It is an arithmetic number, because the mean of its divisors is an integer number (61740).

2⁸⁴⁰⁵⁴¹ is an apocalyptic number.

It is an amenable number.

840541 is a deficient number, since it is larger than the sum of its proper divisors (147299).

840541 is a wasteful number, since it uses less digits than its factorization.

840541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 840541 is about 916.8102311820. The cubic root of 840541 is about 94.3741313898.

Adding to 840541 its reverse (145048), we get a palindrome (985589).

The spelling of 840541 in words is "eight hundred forty thousand, five hundred forty-one".