2421813 has 8 divisors (see below), whose sum is σ = 3333376. Its totient is φ = 1562400.

The previous prime is 2421791. The next prime is 2421817. The reversal of 2421813 is 3181242.

2421813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2421813 - 2⁵ = 2421781 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2421813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421817) 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, 12928 + ... + 13113.

It is an arithmetic number, because the mean of its divisors is an integer number (416672).

2^2421813 is an apocalyptic number.

It is an amenable number.

2421813 is a deficient number, since it is larger than the sum of its proper divisors (911563).

2421813 is a wasteful number, since it uses less digits than its factorization.

2421813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26075.

The product of its digits is 384, while the sum is 21.

The square root of 2421813 is about 1556.2175297817. The cubic root of 2421813 is about 134.2909879043.

The spelling of 2421813 in words is "two million, four hundred twenty-one thousand, eight hundred thirteen".