42966845 has 4 divisors (see below), whose sum is σ = 51560220. Its totient is φ = 34373472.

The previous prime is 42966841. The next prime is 42966877. The reversal of 42966845 is 54866924.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11539609 + 31427236 = 3397^2 + 5606^2 .

It is a cyclic number.

It is not a de Polignac number, because 42966845 - 2² = 42966841 is a prime.

It is a super-2 number, since 2×42966845² = 3692299538508050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42966796 and 42966805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42966841) 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 3 ways as a sum of consecutive naturals, for example, 4296680 + ... + 4296689.

It is an arithmetic number, because the mean of its divisors is an integer number (12890055).

Almost surely, 2^42966845 is an apocalyptic number.

It is an amenable number.

42966845 is a deficient number, since it is larger than the sum of its proper divisors (8593375).

42966845 is an equidigital number, since it uses as much as digits as its factorization.

42966845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8593374.

The product of its digits is 414720, while the sum is 44.

The square root of 42966845 is about 6554.9099917543. The cubic root of 42966845 is about 350.2497401246.

The spelling of 42966845 in words is "forty-two million, nine hundred sixty-six thousand, eight hundred forty-five".