2424921 has 4 divisors (see below), whose sum is σ = 3233232. Its totient is φ = 1616612.

The previous prime is 2424907. The next prime is 2424937. The reversal of 2424921 is 1294242.

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 2424921 - 2¹¹ = 2422873 is a prime.

It is a super-3 number, since 3×2424921³ = 42777365886833345883, which contains 333 as substring.

It is a D-number.

It is a Curzon number.

2424921 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2424891 and 2424900.

It is not an unprimeable number, because it can be changed into a prime (2424971) 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, 404151 + ... + 404156.

It is an arithmetic number, because the mean of its divisors is an integer number (808308).

2^2424921 is an apocalyptic number.

It is an amenable number.

2424921 is a deficient number, since it is larger than the sum of its proper divisors (808311).

2424921 is an equidigital number, since it uses as much as digits as its factorization.

2424921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808310.

The product of its digits is 1152, while the sum is 24.

The square root of 2424921 is about 1557.2157846618. The cubic root of 2424921 is about 134.3484101706.

The spelling of 2424921 in words is "two million, four hundred twenty-four thousand, nine hundred twenty-one".