220504242 has 32 divisors (see below), whose sum is σ = 504548352. Its totient is φ = 62933904.

The previous prime is 220504241. The next prime is 220504279. The reversal of 220504242 is 242405022.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (220504241) 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 15 ways as a sum of consecutive naturals, for example, 47643 + ... + 52065.

It is an arithmetic number, because the mean of its divisors is an integer number (15767136).

Almost surely, 2^220504242 is an apocalyptic number.

220504242 is an abundant number, since it is smaller than the sum of its proper divisors (284044110).

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

220504242 is a wasteful number, since it uses less digits than its factorization.

220504242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5622.

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 220504242 is about 14849.3852398003. The cubic root of 220504242 is about 604.1419359284.

Adding to 220504242 its reverse (242405022), we get a palindrome (462909264).

The spelling of 220504242 in words is "two hundred twenty million, five hundred four thousand, two hundred forty-two".