422543556 has 36 divisors (see below), whose sum is σ = 1071977452. Its totient is φ = 140336064.

The previous prime is 422543549. The next prime is 422543579. The reversal of 422543556 is 655345224.

422543556 is a `hidden beast` number, since 42 + 25 + 43 + 556 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 45562500 + 376981056 = 6750^2 + 19416^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 422543556.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11215 + ... + 31158.

Almost surely, 2^422543556 is an apocalyptic number.

It is an amenable number.

422543556 is an abundant number, since it is smaller than the sum of its proper divisors (649433896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

422543556 is a wasteful number, since it uses less digits than its factorization.

422543556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42660 (or 42655 counting only the distinct ones).

The product of its digits is 144000, while the sum is 36.

The square root of 422543556 is about 20555.8642727568. The cubic root of 422543556 is about 750.3959722379.

The spelling of 422543556 in words is "four hundred twenty-two million, five hundred forty-three thousand, five hundred fifty-six".