20042115343 has 4 divisors (see below), whose sum is σ = 20091118480. Its totient is φ = 19993112208.

The previous prime is 20042115329. The next prime is 20042115349. The reversal of 20042115343 is 34351124002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20042115343 - 2¹⁷ = 20041984271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20042115349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24500955 + ... + 24501772.

It is an arithmetic number, because the mean of its divisors is an integer number (5022779620).

Almost surely, 2^20042115343 is an apocalyptic number.

20042115343 is a deficient number, since it is larger than the sum of its proper divisors (49003137).

20042115343 is an equidigital number, since it uses as much as digits as its factorization.

20042115343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49003136.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 20042115343 its reverse (34351124002), we get a palindrome (54393239345).

The spelling of 20042115343 in words is "twenty billion, forty-two million, one hundred fifteen thousand, three hundred forty-three".