20005143342 has 8 divisors (see below), whose sum is σ = 40010286696. Its totient is φ = 6668381112.

The previous prime is 20005143317. The next prime is 20005143359. The reversal of 20005143342 is 24334150002.

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

20005143342 is an admirable number.

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, 1667095273 + ... + 1667095284.

It is an arithmetic number, because the mean of its divisors is an integer number (5001285837).

Almost surely, 2^20005143342 is an apocalyptic number.

20005143342 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20005143342 is a wasteful number, since it uses less digits than its factorization.

20005143342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3334190562.

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 20005143342 its reverse (24334150002), we get a palindrome (44339293344).

The spelling of 20005143342 in words is "twenty billion, five million, one hundred forty-three thousand, three hundred forty-two".