2124665 has 8 divisors (see below), whose sum is σ = 2584968. Its totient is φ = 1676160.

The previous prime is 2124659. The next prime is 2124667. The reversal of 2124665 is 5664212.

2124665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 606841 + 1517824 = 779^2 + 1232^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2124665 - 2⁶ = 2124601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2124667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2546 + ... + 3275.

It is an arithmetic number, because the mean of its divisors is an integer number (323121).

2^2124665 is an apocalyptic number.

It is an amenable number.

2124665 is a deficient number, since it is larger than the sum of its proper divisors (460303).

2124665 is an equidigital number, since it uses as much as digits as its factorization.

2124665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5899.

The product of its digits is 2880, while the sum is 26.

The square root of 2124665 is about 1457.6230651304. The cubic root of 2124665 is about 128.5573232615.

Adding to 2124665 its reverse (5664212), we get a palindrome (7788877).

The spelling of 2124665 in words is "two million, one hundred twenty-four thousand, six hundred sixty-five".