20042342133 has 32 divisors (see below), whose sum is σ = 29939559552. Its totient is φ = 11820441600.

The previous prime is 20042342081. The next prime is 20042342137. The reversal of 20042342133 is 33124324002.

It is not a de Polignac number, because 20042342133 - 2⁹ = 20042341621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20042342137) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 518485 + ... + 555797.

It is an arithmetic number, because the mean of its divisors is an integer number (935611236).

Almost surely, 2^20042342133 is an apocalyptic number.

It is an amenable number.

20042342133 is a deficient number, since it is larger than the sum of its proper divisors (9897217419).

20042342133 is a wasteful number, since it uses less digits than its factorization.

20042342133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37765.

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

Adding to 20042342133 its reverse (33124324002), we get a palindrome (53166666135).

It can be divided in two parts, 200423 and 42133, that added together give a triangular number (242556 = T₆₉₆).

The spelling of 20042342133 in words is "twenty billion, forty-two million, three hundred forty-two thousand, one hundred thirty-three".