42873352821 has 24 divisors (see below), whose sum is σ = 66744097056. Its totient is φ = 26362945440.

The previous prime is 42873352799. The next prime is 42873352843. The reversal of 42873352821 is 12825337824.

42873352821 is a `hidden beast` number, since 42 + 87 + 3 + 3 + 528 + 2 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (42873352799) and next prime (42873352843).

It is not a de Polignac number, because 42873352821 - 2²⁷ = 42739135093 is a prime.

It is a super-2 number, since 2×42873352821² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42873352121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7306 + ... + 292916.

It is an arithmetic number, because the mean of its divisors is an integer number (2781004044).

Almost surely, 2^42873352821 is an apocalyptic number.

It is an amenable number.

42873352821 is a deficient number, since it is larger than the sum of its proper divisors (23870744235).

42873352821 is a wasteful number, since it uses less digits than its factorization.

42873352821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286913 (or 286910 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The spelling of 42873352821 in words is "forty-two billion, eight hundred seventy-three million, three hundred fifty-two thousand, eight hundred twenty-one".