42278313 has 16 divisors (see below), whose sum is σ = 70281216. Its totient is φ = 21962640.

The previous prime is 42278267. The next prime is 42278321. The reversal of 42278313 is 31387224.

It is not a de Polignac number, because 42278313 - 2⁹ = 42277801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42278113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91281 + ... + 91742.

It is an arithmetic number, because the mean of its divisors is an integer number (4392576).

Almost surely, 2^42278313 is an apocalyptic number.

It is an amenable number.

42278313 is a deficient number, since it is larger than the sum of its proper divisors (28002903).

42278313 is a wasteful number, since it uses less digits than its factorization.

42278313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183044.

The product of its digits is 8064, while the sum is 30.

The square root of 42278313 is about 6502.1775583261. The cubic root of 42278313 is about 348.3687711225.

The spelling of 42278313 in words is "forty-two million, two hundred seventy-eight thousand, three hundred thirteen".