42278727 has 8 divisors (see below), whose sum is σ = 56423664. Its totient is φ = 28159808.

The previous prime is 42278693. The next prime is 42278737. The reversal of 42278727 is 72787224.

It is a happy number.

42278727 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42278727 is a prime.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 2328 + ... + 9485.

It is an arithmetic number, because the mean of its divisors is an integer number (7052958).

Almost surely, 2^42278727 is an apocalyptic number.

42278727 is a deficient number, since it is larger than the sum of its proper divisors (14144937).

42278727 is a wasteful number, since it uses less digits than its factorization.

42278727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13009.

The product of its digits is 87808, while the sum is 39.

The square root of 42278727 is about 6502.2093937369. The cubic root of 42278727 is about 348.3699082240.

The spelling of 42278727 in words is "forty-two million, two hundred seventy-eight thousand, seven hundred twenty-seven".