20220242 has 48 divisors (see below), whose sum is σ = 38228760. Its totient is φ = 7967232.

The previous prime is 20220217. The next prime is 20220247. The reversal of 20220242 is 24202202.

It can be written as a sum of positive squares in 4 ways, for example, as 19882681 + 337561 = 4459^2 + 581^2 .

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (20220247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 88184 + ... + 88412.

Almost surely, 2^20220242 is an apocalyptic number.

20220242 is a deficient number, since it is larger than the sum of its proper divisors (18008518).

20220242 is a wasteful number, since it uses less digits than its factorization.

20220242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315 (or 308 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 20220242 is about 4496.6923399317. The cubic root of 20220242 is about 272.4345077298.

Adding to 20220242 its reverse (24202202), we get a palindrome (44422444).

The spelling of 20220242 in words is "twenty million, two hundred twenty thousand, two hundred forty-two".