2218542 has 16 divisors (see below), whose sum is σ = 4540800. Its totient is φ = 722232.

The previous prime is 2218523. The next prime is 2218547. The reversal of 2218542 is 2458122.

2218542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a d-powerful number, because it can be written as 2¹¹ + 2¹³ + 1 + 8⁵ + 5⁷ + 4⁴ + 2²¹ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2218547) 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, 4042 + ... + 4557.

It is an arithmetic number, because the mean of its divisors is an integer number (283800).

2^2218542 is an apocalyptic number.

2218542 is an abundant number, since it is smaller than the sum of its proper divisors (2322258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2218542 is a wasteful number, since it uses less digits than its factorization.

2218542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8647.

The product of its digits is 1280, while the sum is 24.

The square root of 2218542 is about 1489.4770894512. The cubic root of 2218542 is about 130.4235103206.

The spelling of 2218542 in words is "two million, two hundred eighteen thousand, five hundred forty-two".