42678042 has 16 divisors (see below), whose sum is σ = 93115872. Its totient is φ = 12932720.

The previous prime is 42678037. The next prime is 42678049. The reversal of 42678042 is 24087624.

42678042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 42677994 and 42678012.

It is not an unprimeable number, because it can be changed into a prime (42678049) 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, 323253 + ... + 323384.

It is an arithmetic number, because the mean of its divisors is an integer number (5819742).

Almost surely, 2^42678042 is an apocalyptic number.

42678042 is an abundant number, since it is smaller than the sum of its proper divisors (50437830).

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

42678042 is a wasteful number, since it uses less digits than its factorization.

42678042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646653.

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 42678042 is about 6532.8433319650. The cubic root of 42678042 is about 349.4632371007.

The spelling of 42678042 in words is "forty-two million, six hundred seventy-eight thousand, forty-two".