20042343321 has 48 divisors (see below), whose sum is σ = 36151876992. Its totient is φ = 9610698240.

The previous prime is 20042343263. The next prime is 20042343337. The reversal of 20042343321 is 12334324002.

It is not a de Polignac number, because 20042343321 - 2¹⁸ = 20042081177 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20042343291 and 20042343300.

It is not an unprimeable number, because it can be changed into a prime (20042343521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 270336 + ... + 336401.

It is an arithmetic number, because the mean of its divisors is an integer number (753164104).

Almost surely, 2^20042343321 is an apocalyptic number.

20042343321 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20042343321 is a deficient number, since it is larger than the sum of its proper divisors (16109533671).

20042343321 is a wasteful number, since it uses less digits than its factorization.

20042343321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606782 (or 606771 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 20042343321 its reverse (12334324002), we get a palindrome (32376667323).

It can be divided in two parts, 20042 and 343321, that added together give a palindrome (363363).

The spelling of 20042343321 in words is "twenty billion, forty-two million, three hundred forty-three thousand, three hundred twenty-one".