42750878 has 4 divisors (see below), whose sum is σ = 64126320. Its totient is φ = 21375438.

The previous prime is 42750863. The next prime is 42750889. The reversal of 42750878 is 87805724.

42750878 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 10687718 + ... + 10687721.

It is an arithmetic number, because the mean of its divisors is an integer number (16031580).

Almost surely, 2^42750878 is an apocalyptic number.

42750878 is a deficient number, since it is larger than the sum of its proper divisors (21375442).

42750878 is a wasteful number, since it uses less digits than its factorization.

42750878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21375441.

The product of its (nonzero) digits is 125440, while the sum is 41.

The square root of 42750878 is about 6538.4155573044. The cubic root of 42750878 is about 349.6619266132.

The spelling of 42750878 in words is "forty-two million, seven hundred fifty thousand, eight hundred seventy-eight".