220205642 has 8 divisors (see below), whose sum is σ = 341698500. Its totient is φ = 106306144.

The previous prime is 220205633. The next prime is 220205653. The reversal of 220205642 is 246502022.

It can be written as a sum of positive squares in 2 ways, for example, as 211673401 + 8532241 = 14549^2 + 2921^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1898267 + ... + 1898382.

Almost surely, 2^220205642 is an apocalyptic number.

220205642 is a deficient number, since it is larger than the sum of its proper divisors (121492858).

220205642 is a wasteful number, since it uses less digits than its factorization.

220205642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3796680.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 220205642 is about 14839.3275454112. The cubic root of 220205642 is about 603.8691093212.

Adding to 220205642 its reverse (246502022), we get a palindrome (466707664).

The spelling of 220205642 in words is "two hundred twenty million, two hundred five thousand, six hundred forty-two".