42161682 has 16 divisors (see below), whose sum is σ = 84553920. Its totient is φ = 14015472.

The previous prime is 42161681. The next prime is 42161687. The reversal of 42161682 is 28616124.

It is not an unprimeable number, because it can be changed into a prime (42161681) 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, 7182 + ... + 11657.

It is an arithmetic number, because the mean of its divisors is an integer number (5284620).

Almost surely, 2^42161682 is an apocalyptic number.

42161682 is an abundant number, since it is smaller than the sum of its proper divisors (42392238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42161682 is a wasteful number, since it uses less digits than its factorization.

42161682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19217.

The product of its digits is 4608, while the sum is 30.

The square root of 42161682 is about 6493.2027536494. The cubic root of 42161682 is about 348.0481337833.

The spelling of 42161682 in words is "forty-two million, one hundred sixty-one thousand, six hundred eighty-two".