42020340423 has 8 divisors (see below), whose sum is σ = 56065739136. Its totient is φ = 27994251000.

The previous prime is 42020340413. The next prime is 42020340533. The reversal of 42020340423 is 32404302024.

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

It is not a de Polignac number, because 42020340423 - 2⁴ = 42020340407 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42020340393 and 42020340402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42020340413) 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 7 ways as a sum of consecutive naturals, for example, 4822243 + ... + 4830948.

It is an arithmetic number, because the mean of its divisors is an integer number (7008217392).

Almost surely, 2^42020340423 is an apocalyptic number.

42020340423 is a deficient number, since it is larger than the sum of its proper divisors (14045398713).

42020340423 is a wasteful number, since it uses less digits than its factorization.

42020340423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9654645.

The product of its (nonzero) digits is 4608, while the sum is 24.

Adding to 42020340423 its reverse (32404302024), we get a palindrome (74424642447).

The spelling of 42020340423 in words is "forty-two billion, twenty million, three hundred forty thousand, four hundred twenty-three".