20542442023 has 8 divisors (see below), whose sum is σ = 20677399280. Its totient is φ = 20407878720.

The previous prime is 20542442003. The next prime is 20542442087. The reversal of 20542442023 is 32024424502.

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

It is a cyclic number.

It is not a de Polignac number, because 20542442023 - 2¹⁷ = 20542310951 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20542441982 and 20542442000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20542442003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6508 + ... + 202798.

It is an arithmetic number, because the mean of its divisors is an integer number (2584674910).

Almost surely, 2^20542442023 is an apocalyptic number.

20542442023 is a deficient number, since it is larger than the sum of its proper divisors (134957257).

20542442023 is a wasteful number, since it uses less digits than its factorization.

20542442023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196977.

The product of its (nonzero) digits is 15360, while the sum is 28.

Adding to 20542442023 its reverse (32024424502), we get a palindrome (52566866525).

The spelling of 20542442023 in words is "twenty billion, five hundred forty-two million, four hundred forty-two thousand, twenty-three".