42256678 has 8 divisors (see below), whose sum is σ = 63765072. Its totient is φ = 21001656.

The previous prime is 42256667. The next prime is 42256693. The reversal of 42256678 is 87665224.

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

It is a self number, because there is not a number n which added to its sum of digits gives 42256678.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62925 + ... + 63592.

It is an arithmetic number, because the mean of its divisors is an integer number (7970634).

Almost surely, 2^42256678 is an apocalyptic number.

42256678 is a deficient number, since it is larger than the sum of its proper divisors (21508394).

42256678 is a wasteful number, since it uses less digits than its factorization.

42256678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126686.

The product of its digits is 161280, while the sum is 40.

The square root of 42256678 is about 6500.5136720109. The cubic root of 42256678 is about 348.3093376224.

The spelling of 42256678 in words is "forty-two million, two hundred fifty-six thousand, six hundred seventy-eight".