20323421440142 has 8 divisors (see below), whose sum is σ = 30488063736000. Its totient is φ = 10160733528144.

The previous prime is 20323421440129. The next prime is 20323421440177. The reversal of 20323421440142 is 24104412432302.

It is a happy number.

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 = 20323421440099 and 20323421440108.

It is a congruent number.

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, 488569967 + ... + 488611562.

It is an arithmetic number, because the mean of its divisors is an integer number (3811007967000).

Almost surely, 2^{20323421440142} is an apocalyptic number.

20323421440142 is a deficient number, since it is larger than the sum of its proper divisors (10164642295858).

20323421440142 is a wasteful number, since it uses less digits than its factorization.

20323421440142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 977191930.

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 20323421440142 its reverse (24104412432302), we get a palindrome (44427833872444).

The spelling of 20323421440142 in words is "twenty trillion, three hundred twenty-three billion, four hundred twenty-one million, four hundred forty thousand, one hundred forty-two".