220240242 has 16 divisors (see below), whose sum is σ = 489422880. Its totient is φ = 73413396.

The previous prime is 220240231. The next prime is 220240247. The reversal of 220240242 is 242042022.

220240242 is a `hidden beast` number, since 220 + 2 + 402 + 42 = 666.

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 (220240247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2039208 + ... + 2039315.

It is an arithmetic number, because the mean of its divisors is an integer number (30588930).

Almost surely, 2^220240242 is an apocalyptic number.

220240242 is an abundant number, since it is smaller than the sum of its proper divisors (269182638).

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

220240242 is a wasteful number, since it uses less digits than its factorization.

220240242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4078534 (or 4078528 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 220240242 is about 14840.4933206413. The cubic root of 220240242 is about 603.9007354818.

Adding to 220240242 its reverse (242042022), we get a palindrome (462282264).

The spelling of 220240242 in words is "two hundred twenty million, two hundred forty thousand, two hundred forty-two".