42295221581 has 8 divisors (see below), whose sum is σ = 43137654720. Its totient is φ = 41459897952.

The previous prime is 42295221569. The next prime is 42295221599. The reversal of 42295221581 is 18512259224.

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

It is a cyclic number.

It is not a de Polignac number, because 42295221581 - 2¹⁰ = 42295220557 is a prime.

It is a super-2 number, since 2×42295221581² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42294221581) 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 7 ways as a sum of consecutive naturals, for example, 1765361 + ... + 1789158.

It is an arithmetic number, because the mean of its divisors is an integer number (5392206840).

Almost surely, 2^42295221581 is an apocalyptic number.

It is an amenable number.

42295221581 is a deficient number, since it is larger than the sum of its proper divisors (842433139).

42295221581 is a wasteful number, since it uses less digits than its factorization.

42295221581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3554755.

The product of its digits is 115200, while the sum is 41.

The spelling of 42295221581 in words is "forty-two billion, two hundred ninety-five million, two hundred twenty-one thousand, five hundred eighty-one".