42220566441 has 44 divisors (see below), whose sum is σ = 63711976068. Its totient is φ = 27977573664.

The previous prime is 42220566419. The next prime is 42220566473. The reversal of 42220566441 is 14466502224.

42220566441 is a `hidden beast` number, since 4 + 2 + 2 + 2 + 0 + 5 + 6 + 644 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 35192259216 + 7028307225 = 187596^2 + 83835^2 .

It is not a de Polignac number, because 42220566441 - 2¹⁸ = 42220304297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42220566396 and 42220566405.

It is not an unprimeable number, because it can be changed into a prime (42220566491) 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 43 ways as a sum of consecutive naturals, for example, 10213411 + ... + 10217543.

Almost surely, 2^42220566441 is an apocalyptic number.

It is an amenable number.

42220566441 is a deficient number, since it is larger than the sum of its proper divisors (21491409627).

42220566441 is an frugal number, since it uses more digits than its factorization.

42220566441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4336 (or 4309 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

The spelling of 42220566441 in words is "forty-two billion, two hundred twenty million, five hundred sixty-six thousand, four hundred forty-one".