42940286 has 8 divisors (see below), whose sum is σ = 64469304. Its totient is φ = 21450520.

The previous prime is 42940267. The next prime is 42940307. The reversal of 42940286 is 68204924.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6905 + ... + 11556.

It is an arithmetic number, because the mean of its divisors is an integer number (8058663).

Almost surely, 2^42940286 is an apocalyptic number.

42940286 is a deficient number, since it is larger than the sum of its proper divisors (21529018).

42940286 is a wasteful number, since it uses less digits than its factorization.

42940286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19626.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 42940286 is about 6552.8837926519. The cubic root of 42940286 is about 350.1775588868.

The spelling of 42940286 in words is "forty-two million, nine hundred forty thousand, two hundred eighty-six".