42550878 has 8 divisors (see below), whose sum is σ = 85101768. Its totient is φ = 14183624.

The previous prime is 42550877. The next prime is 42550889. The reversal of 42550878 is 87805524.

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

42550878 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42550877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3545901 + ... + 3545912.

It is an arithmetic number, because the mean of its divisors is an integer number (10637721).

Almost surely, 2^42550878 is an apocalyptic number.

42550878 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.

42550878 is a wasteful number, since it uses less digits than its factorization.

42550878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7091818.

The product of its (nonzero) digits is 89600, while the sum is 39.

The square root of 42550878 is about 6523.1034025225. The cubic root of 42550878 is about 349.1158035312.

The spelling of 42550878 in words is "forty-two million, five hundred fifty thousand, eight hundred seventy-eight".