42278265 has 24 divisors (see below), whose sum is σ = 75648768. Its totient is φ = 21820320.

The previous prime is 42278263. The next prime is 42278267. The reversal of 42278265 is 56287224.

42278265 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (42278263) and next prime (42278267).

It is not a de Polignac number, because 42278265 - 2¹ = 42278263 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42278261) by changing a digit.

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 in 23 ways as a sum of consecutive naturals, for example, 13759 + ... + 16548.

It is an arithmetic number, because the mean of its divisors is an integer number (3152032).

Almost surely, 2^42278265 is an apocalyptic number.

42278265 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42278265 is a deficient number, since it is larger than the sum of its proper divisors (33370503).

42278265 is a wasteful number, since it uses less digits than its factorization.

42278265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30349 (or 30346 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 42278265 is about 6502.1738672539. The cubic root of 42278265 is about 348.3686392842.

It can be divided in two parts, 422 and 78265, that added together give a palindrome (78687).

The spelling of 42278265 in words is "forty-two million, two hundred seventy-eight thousand, two hundred sixty-five".