2418021 has 12 divisors (see below), whose sum is σ = 3515148. Its totient is φ = 1601664.

The previous prime is 2418007. The next prime is 2418037. The reversal of 2418021 is 1208142.

2418021 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 2 ways, for example, as 1232100 + 1185921 = 1110^2 + 1089^2 .

It is not a de Polignac number, because 2418021 - 2¹³ = 2409829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2417985 and 2418003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2418001) 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 11 ways as a sum of consecutive naturals, for example, 781 + ... + 2333.

It is an arithmetic number, because the mean of its divisors is an integer number (292929).

2^2418021 is an apocalyptic number.

It is an amenable number.

2418021 is a deficient number, since it is larger than the sum of its proper divisors (1097127).

2418021 is a wasteful number, since it uses less digits than its factorization.

2418021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1732 (or 1729 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 2418021 is about 1554.9987138258. The cubic root of 2418021 is about 134.2208617306.

The spelling of 2418021 in words is "two million, four hundred eighteen thousand, twenty-one".