42044220242 has 16 divisors (see below), whose sum is σ = 69078740760. Its totient is φ = 19103255808.

The previous prime is 42044220227. The next prime is 42044220269. The reversal of 42044220242 is 24202244024.

It can be written as a sum of positive squares in 4 ways, for example, as 34629115921 + 7415104321 = 186089^2 + 86111^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21319613 + ... + 21321584.

Almost surely, 2^42044220242 is an apocalyptic number.

42044220242 is a deficient number, since it is larger than the sum of its proper divisors (27034520518).

42044220242 is a wasteful number, since it uses less digits than its factorization.

42044220242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42641245.

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 42044220242 its reverse (24202244024), we get a palindrome (66246464266).

The spelling of 42044220242 in words is "forty-two billion, forty-four million, two hundred twenty thousand, two hundred forty-two".