2124817 has 4 divisors (see below), whose sum is σ = 2154816. Its totient is φ = 2094820.

The previous prime is 2124797. The next prime is 2124821. The reversal of 2124817 is 7184212.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2124817 - 2¹⁵ = 2092049 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2124791 and 2124800.

It is not an unprimeable number, because it can be changed into a prime (2124877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14893 + ... + 15034.

It is an arithmetic number, because the mean of its divisors is an integer number (538704).

2^2124817 is an apocalyptic number.

It is an amenable number.

2124817 is a deficient number, since it is larger than the sum of its proper divisors (29999).

2124817 is an equidigital number, since it uses as much as digits as its factorization.

2124817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29998.

The product of its digits is 896, while the sum is 25.

The square root of 2124817 is about 1457.6752038777. The cubic root of 2124817 is about 128.5603888816.

The spelling of 2124817 in words is "two million, one hundred twenty-four thousand, eight hundred seventeen".