42161893 has 8 divisors (see below), whose sum is σ = 44546720. Its totient is φ = 39793680.

The previous prime is 42161869. The next prime is 42161927. The reversal of 42161893 is 39816124.

42161893 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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42161893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42161803) 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, 1258 + ... + 9268.

It is an arithmetic number, because the mean of its divisors is an integer number (5568340).

Almost surely, 2^42161893 is an apocalyptic number.

It is an amenable number.

42161893 is a deficient number, since it is larger than the sum of its proper divisors (2384827).

42161893 is a wasteful number, since it uses less digits than its factorization.

42161893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8307.

The product of its digits is 10368, while the sum is 34.

The square root of 42161893 is about 6493.2190013891. The cubic root of 42161893 is about 348.0487143898.

The spelling of 42161893 in words is "forty-two million, one hundred sixty-one thousand, eight hundred ninety-three".