42455005281 has 48 divisors (see below), whose sum is σ = 68327925120. Its totient is φ = 26041279680.

The previous prime is 42455005247. The next prime is 42455005289. The reversal of 42455005281 is 18250055424.

42455005281 is a `hidden beast` number, since 4 + 24 + 5 + 500 + 52 + 81 = 666.

It is not a de Polignac number, because 42455005281 - 2¹⁰ = 42455004257 is a prime.

It is a super-2 number, since 2×42455005281² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42455005289) 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 47 ways as a sum of consecutive naturals, for example, 1404135 + ... + 1434051.

It is an arithmetic number, because the mean of its divisors is an integer number (1423498440).

Almost surely, 2^42455005281 is an apocalyptic number.

It is an amenable number.

42455005281 is a deficient number, since it is larger than the sum of its proper divisors (25872919839).

42455005281 is a wasteful number, since it uses less digits than its factorization.

42455005281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30263 (or 30244 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 36.

The spelling of 42455005281 in words is "forty-two billion, four hundred fifty-five million, five thousand, two hundred eighty-one".