42131542543 has 16 divisors (see below), whose sum is σ = 43649405280. Its totient is φ = 40635219456.

The previous prime is 42131542529. The next prime is 42131542549. The reversal of 42131542543 is 34524513124.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42131542543 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42131542499 and 42131542508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42131542549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1946203 + ... + 1967731.

It is an arithmetic number, because the mean of its divisors is an integer number (2728087830).

Almost surely, 2^42131542543 is an apocalyptic number.

42131542543 is a deficient number, since it is larger than the sum of its proper divisors (1517862737).

42131542543 is a wasteful number, since it uses less digits than its factorization.

42131542543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22026.

The product of its digits is 57600, while the sum is 34.

The spelling of 42131542543 in words is "forty-two billion, one hundred thirty-one million, five hundred forty-two thousand, five hundred forty-three".