42343986 has 8 divisors (see below), whose sum is σ = 84687984. Its totient is φ = 14114660.

The previous prime is 42343981. The next prime is 42343997. The reversal of 42343986 is 68934324.

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

42343986 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42343981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3528660 + ... + 3528671.

It is an arithmetic number, because the mean of its divisors is an integer number (10585998).

Almost surely, 2^42343986 is an apocalyptic number.

42343986 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

42343986 is a wasteful number, since it uses less digits than its factorization.

42343986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7057336.

The product of its digits is 124416, while the sum is 39.

The square root of 42343986 is about 6507.2256761234. The cubic root of 42343986 is about 348.5490573010.

The spelling of 42343986 in words is "forty-two million, three hundred forty-three thousand, nine hundred eighty-six".