42278707 has 4 divisors (see below), whose sum is σ = 42337120. Its totient is φ = 42220296.

The previous prime is 42278693. The next prime is 42278737. The reversal of 42278707 is 70787224.

42278707 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42278707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42278737) 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 3 ways as a sum of consecutive naturals, for example, 28107 + ... + 29572.

It is an arithmetic number, because the mean of its divisors is an integer number (10584280).

Almost surely, 2^42278707 is an apocalyptic number.

42278707 is a deficient number, since it is larger than the sum of its proper divisors (58413).

42278707 is an equidigital number, since it uses as much as digits as its factorization.

42278707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58412.

The product of its (nonzero) digits is 43904, while the sum is 37.

The square root of 42278707 is about 6502.2078557979. The cubic root of 42278707 is about 348.3698532917.

The spelling of 42278707 in words is "forty-two million, two hundred seventy-eight thousand, seven hundred seven".