42945771 has 8 divisors (see below), whose sum is σ = 62466624. Its totient is φ = 26027720.

The previous prime is 42945767. The next prime is 42945797. The reversal of 42945771 is 17754924.

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 42945771 - 2² = 42945767 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42945731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 650661 + ... + 650726.

It is an arithmetic number, because the mean of its divisors is an integer number (7808328).

Almost surely, 2^42945771 is an apocalyptic number.

42945771 is a deficient number, since it is larger than the sum of its proper divisors (19520853).

42945771 is a wasteful number, since it uses less digits than its factorization.

42945771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1301401.

The product of its digits is 70560, while the sum is 39.

The square root of 42945771 is about 6553.3022973155. The cubic root of 42945771 is about 350.1924682901.

The spelling of 42945771 in words is "forty-two million, nine hundred forty-five thousand, seven hundred seventy-one".