422678 has 4 divisors (see below), whose sum is σ = 634020. Its totient is φ = 211338.

The previous prime is 422657. The next prime is 422689. The reversal of 422678 is 876224.

422678 is digitally balanced in base 3, 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 Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 422678.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 422678.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105668 + ... + 105671.

It is an arithmetic number, because the mean of its divisors is an integer number (158505).

2⁴²²⁶⁷⁸ is an apocalyptic number.

422678 is a deficient number, since it is larger than the sum of its proper divisors (211342).

422678 is a wasteful number, since it uses less digits than its factorization.

422678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211341.

The product of its digits is 5376, while the sum is 29.

The square root of 422678 is about 650.1369086585. The cubic root of 422678 is about 75.0475550257.

The spelling of 422678 in words is "four hundred twenty-two thousand, six hundred seventy-eight".