20444420242 has 8 divisors (see below), whose sum is σ = 32280663600. Its totient is φ = 9684199044.

The previous prime is 20444420197. The next prime is 20444420273. The reversal of 20444420242 is 24202444402.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20444420242.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269005492 + ... + 269005567.

It is an arithmetic number, because the mean of its divisors is an integer number (4035082950).

Almost surely, 2^20444420242 is an apocalyptic number.

20444420242 is a deficient number, since it is larger than the sum of its proper divisors (11836243358).

20444420242 is a wasteful number, since it uses less digits than its factorization.

20444420242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538011080.

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 20444420242 its reverse (24202444402), we get a palindrome (44646864644).

The spelling of 20444420242 in words is "twenty billion, four hundred forty-four million, four hundred twenty thousand, two hundred forty-two".