220040042 has 8 divisors (see below), whose sum is σ = 330552516. Its totient is φ = 109855872.

The previous prime is 220040039. The next prime is 220040063. The reversal of 220040042 is 240040022.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 213481321 + 6558721 = 14611^2 + 2561^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 220039999 and 220040026.

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, 80393 + ... + 83084.

Almost surely, 2^220040042 is an apocalyptic number.

220040042 is a deficient number, since it is larger than the sum of its proper divisors (110512474).

220040042 is a wasteful number, since it uses less digits than its factorization.

220040042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164152.

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

The square root of 220040042 is about 14833.7467283219. The cubic root of 220040042 is about 603.7176966058.

Adding to 220040042 its reverse (240040022), we get a palindrome (460080064).

The spelling of 220040042 in words is "two hundred twenty million, forty thousand, forty-two".