42678 has 12 divisors (see below), whose sum is σ = 92508. Its totient is φ = 14220.

The previous prime is 42677. The next prime is 42683. The reversal of 42678 is 87624.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 42678.

It is not an unprimeable number, because it can be changed into a prime (42677) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1168 + ... + 1203.

It is an arithmetic number, because the mean of its divisors is an integer number (7709).

2⁴²⁶⁷⁸ is an apocalyptic number.

42678 is an abundant number, since it is smaller than the sum of its proper divisors (49830).

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

42678 is a wasteful number, since it uses less digits than its factorization.

42678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2379 (or 2376 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 42678 is about 206.5865436082. The cubic root of 42678 is about 34.9463122464.

The spelling of 42678 in words is "forty-two thousand, six hundred seventy-eight".