642534282543 has 8 divisors (see below), whose sum is σ = 856723094656. Its totient is φ = 428350829400.

The previous prime is 642534282541. The next prime is 642534282553. The reversal of 642534282543 is 345282435246.

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

It is not a de Polignac number, because 642534282543 - 2¹ = 642534282541 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 642534282492 and 642534282501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642534282541) 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 7 ways as a sum of consecutive naturals, for example, 1051093 + ... + 1545918.

It is an arithmetic number, because the mean of its divisors is an integer number (107090386832).

Almost surely, 2^642534282543 is an apocalyptic number.

642534282543 is a deficient number, since it is larger than the sum of its proper divisors (214188812113).

642534282543 is a wasteful number, since it uses less digits than its factorization.

642534282543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2679485.

The product of its digits is 5529600, while the sum is 48.

The spelling of 642534282543 in words is "six hundred forty-two billion, five hundred thirty-four million, two hundred eighty-two thousand, five hundred forty-three".