40002220442 has 4 divisors (see below), whose sum is σ = 60003330666. Its totient is φ = 20001110220.

The previous prime is 40002220411. The next prime is 40002220457. The reversal of 40002220442 is 24402220004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 27179149321 + 12823071121 = 164861^2 + 113239^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000555109 + ... + 10000555112.

Almost surely, 2^40002220442 is an apocalyptic number.

40002220442 is a deficient number, since it is larger than the sum of its proper divisors (20001110224).

40002220442 is a wasteful number, since it uses less digits than its factorization.

40002220442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20001110223.

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 40002220442 its reverse (24402220004), we get a palindrome (64404440446).

The spelling of 40002220442 in words is "forty billion, two million, two hundred twenty thousand, four hundred forty-two".