42816078 has 12 divisors (see below), whose sum is σ = 92768208. Its totient is φ = 14272020.

The previous prime is 42816077. The next prime is 42816079. The reversal of 42816078 is 87061824.

42816078 is a `hidden beast` number, since 42 + 8 + 1 + 607 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (42816077) and next prime (42816079).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42816071) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1189318 + ... + 1189353.

It is an arithmetic number, because the mean of its divisors is an integer number (7730684).

Almost surely, 2^42816078 is an apocalyptic number.

42816078 is an abundant number, since it is smaller than the sum of its proper divisors (49952130).

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

42816078 is a wasteful number, since it uses less digits than its factorization.

42816078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2378679 (or 2378676 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 42816078 is about 6543.3995751444. The cubic root of 42816078 is about 349.8395945244.

The spelling of 42816078 in words is "forty-two million, eight hundred sixteen thousand, seventy-eight".