42078208 has 26 divisors (see below), whose sum is σ = 84154334. Its totient is φ = 21037056.

The previous prime is 42078187. The next prime is 42078233. The reversal of 42078208 is 80287024.

It can be written as a sum of positive squares in only one way, i.e., 31002624 + 11075584 = 5568^2 + 3328^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42078208.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1041 + ... + 9232.

Almost surely, 2^42078208 is an apocalyptic number.

It is an amenable number.

42078208 is a deficient number, since it is larger than the sum of its proper divisors (42076126).

42078208 is an equidigital number, since it uses as much as digits as its factorization.

42078208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10297 (or 10275 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 42078208 is about 6486.7717703030. The cubic root of 42078208 is about 347.8182871294.

The spelling of 42078208 in words is "forty-two million, seventy-eight thousand, two hundred eight".