2022642 has 24 divisors (see below), whose sum is σ = 4502316. Its totient is φ = 655776.

The previous prime is 2022641. The next prime is 2022649. The reversal of 2022642 is 2462202.

It is a happy number.

2022642 is a `hidden beast` number, since 2 + 0 + 22 + 642 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1687401 + 335241 = 1299^2 + 579^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2022641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 853 + ... + 2184.

2^2022642 is an apocalyptic number.

2022642 is an abundant number, since it is smaller than the sum of its proper divisors (2479674).

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

2022642 is a wasteful number, since it uses less digits than its factorization.

2022642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3082 (or 3079 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 2022642 is about 1422.1961889978. The cubic root of 2022642 is about 126.4657741982.

Adding to 2022642 its reverse (2462202), we get a palindrome (4484844).

The spelling of 2022642 in words is "two million, twenty-two thousand, six hundred forty-two".