2100841 has 2 divisors, whose sum is σ = 2100842. Its totient is φ = 2100840.

The previous prime is 2100821. The next prime is 2100859. The reversal of 2100841 is 1480012.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2059225 + 41616 = 1435^2 + 204^2 .

It is a cyclic number.

It is not a de Polignac number, because 2100841 - 2⁷ = 2100713 is a prime.

It is not a weakly prime, because it can be changed into another prime (2100821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050420 + 1050421.

It is an arithmetic number, because the mean of its divisors is an integer number (1050421).

2^2100841 is an apocalyptic number.

It is an amenable number.

2100841 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100841 is an equidigital number, since it uses as much as digits as its factorization.

2100841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 2100841 is about 1449.4278181407. The cubic root of 2100841 is about 128.0750089328.

Adding to 2100841 its reverse (1480012), we get a palindrome (3580853).

It can be divided in two parts, 21008 and 41, that multiplied together give a triangular number (861328 = T₁₃₁₂).

The spelling of 2100841 in words is "two million, one hundred thousand, eight hundred forty-one".