42966081 has 12 divisors (see below), whose sum is σ = 64202580. Its totient is φ = 27656160.

The previous prime is 42966067. The next prime is 42966097. The reversal of 42966081 is 18066924.

42966081 is a `hidden beast` number, since 42 + 9 + 6 + 608 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 25401600 + 17564481 = 5040^2 + 4191^2 .

It is not a de Polignac number, because 42966081 - 2⁶ = 42966017 is a prime.

It is a super-2 number, since 2×42966081² = 3692168232997122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42966061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 82050 + ... + 82571.

It is an arithmetic number, because the mean of its divisors is an integer number (5350215).

Almost surely, 2^42966081 is an apocalyptic number.

It is an amenable number.

42966081 is a deficient number, since it is larger than the sum of its proper divisors (21236499).

42966081 is a wasteful number, since it uses less digits than its factorization.

42966081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164656 (or 164653 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 42966081 is about 6554.8517145699. The cubic root of 42966081 is about 350.2476641643.

The spelling of 42966081 in words is "forty-two million, nine hundred sixty-six thousand, eighty-one".