42645078 has 96 divisors (see below), whose sum is σ = 114656256. Its totient is φ = 11176704.

The previous prime is 42645077. The next prime is 42645091. The reversal of 42645078 is 87054624.

42645078 is a `hidden beast` number, since 4 + 2 + 645 + 0 + 7 + 8 = 666.

42645078 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42645077) 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 47 ways as a sum of consecutive naturals, for example, 91875 + ... + 92337.

It is an arithmetic number, because the mean of its divisors is an integer number (1194336).

Almost surely, 2^42645078 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42645078, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57328128).

42645078 is an abundant number, since it is smaller than the sum of its proper divisors (72011178).

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

42645078 is a wasteful number, since it uses less digits than its factorization.

42645078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538 (or 535 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 42645078 is about 6530.3199002805. The cubic root of 42645078 is about 349.3732402095.

The spelling of 42645078 in words is "forty-two million, six hundred forty-five thousand, seventy-eight".