20422440400442 has 8 divisors (see below), whose sum is σ = 30634755408576. Its totient is φ = 10210855264252.

The previous prime is 20422440400343. The next prime is 20422440400451. The reversal of 20422440400442 is 24400404422402.

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 = 20422440400399 and 20422440400408.

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, 182398028 + ... + 182509959.

It is an arithmetic number, because the mean of its divisors is an integer number (3829344426072).

Almost surely, 2^{20422440400442} is an apocalyptic number.

20422440400442 is a deficient number, since it is larger than the sum of its proper divisors (10212315008134).

20422440400442 is a wasteful number, since it uses less digits than its factorization.

20422440400442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364935972.

The product of its (nonzero) digits is 65536, while the sum is 32.

Adding to 20422440400442 its reverse (24400404422402), we get a palindrome (44822844822844).

The spelling of 20422440400442 in words is "twenty trillion, four hundred twenty-two billion, four hundred forty million, four hundred thousand, four hundred forty-two".