42730878 has 32 divisors (see below), whose sum is σ = 87246720. Its totient is φ = 13949600.

The previous prime is 42730823. The next prime is 42730901. The reversal of 42730878 is 87803724.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64513 + ... + 65171.

It is an arithmetic number, because the mean of its divisors is an integer number (2726460).

Almost surely, 2^42730878 is an apocalyptic number.

42730878 is an abundant number, since it is smaller than the sum of its proper divisors (44515842).

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

42730878 is a wasteful number, since it uses less digits than its factorization.

42730878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872.

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 42730878 is about 6536.8859558661. The cubic root of 42730878 is about 349.6073910521.

The spelling of 42730878 in words is "forty-two million, seven hundred thirty thousand, eight hundred seventy-eight".