42043161 has 8 divisors (see below), whose sum is σ = 57865984. Its totient is φ = 27124560.

The previous prime is 42043139. The next prime is 42043201. The reversal of 42043161 is 16134024.

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

It is not a de Polignac number, because 42043161 - 2⁶ = 42043097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42043961) 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, 225946 + ... + 226131.

It is an arithmetic number, because the mean of its divisors is an integer number (7233248).

Almost surely, 2^42043161 is an apocalyptic number.

It is an amenable number.

42043161 is a deficient number, since it is larger than the sum of its proper divisors (15822823).

42043161 is a wasteful number, since it uses less digits than its factorization.

42043161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452111.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 42043161 is about 6484.0697867929. The cubic root of 42043161 is about 347.7216941897.

Adding to 42043161 its reverse (16134024), we get a palindrome (58177185).

The spelling of 42043161 in words is "forty-two million, forty-three thousand, one hundred sixty-one".