2124641 has 4 divisors (see below), whose sum is σ = 2132484. Its totient is φ = 2116800.

The previous prime is 2124631. The next prime is 2124659. The reversal of 2124641 is 1464212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 960400 + 1164241 = 980^2 + 1079^2 .

It is a cyclic number.

It is not a de Polignac number, because 2124641 - 2¹⁰ = 2123617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2124601) 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, 3500 + ... + 4061.

It is an arithmetic number, because the mean of its divisors is an integer number (533121).

2^2124641 is an apocalyptic number.

It is an amenable number.

2124641 is a deficient number, since it is larger than the sum of its proper divisors (7843).

2124641 is an equidigital number, since it uses as much as digits as its factorization.

2124641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7842.

The product of its digits is 384, while the sum is 20.

The square root of 2124641 is about 1457.6148325261. The cubic root of 2124641 is about 128.5568392029.

Adding to 2124641 its reverse (1464212), we get a palindrome (3588853).

The spelling of 2124641 in words is "two million, one hundred twenty-four thousand, six hundred forty-one".