42943161 has 8 divisors (see below), whose sum is σ = 57848224. Its totient is φ = 28333440.

The previous prime is 42943151. The next prime is 42943177. The reversal of 42943161 is 16134924.

42943161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42943161 - 2¹⁴ = 42926777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42943151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73495 + ... + 74076.

It is an arithmetic number, because the mean of its divisors is an integer number (7231028).

Almost surely, 2^42943161 is an apocalyptic number.

It is an amenable number.

42943161 is a deficient number, since it is larger than the sum of its proper divisors (14905063).

42943161 is a wasteful number, since it uses less digits than its factorization.

42943161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147671.

The product of its digits is 5184, while the sum is 30.

The square root of 42943161 is about 6553.1031580466. The cubic root of 42943161 is about 350.1853739101.

The spelling of 42943161 in words is "forty-two million, nine hundred forty-three thousand, one hundred sixty-one".