423278 has 4 divisors (see below), whose sum is σ = 634920. Its totient is φ = 211638.

The previous prime is 423277. The next prime is 423281. The reversal of 423278 is 872324.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105818 + ... + 105821.

It is an arithmetic number, because the mean of its divisors is an integer number (158730).

2⁴²³²⁷⁸ is an apocalyptic number.

423278 is a deficient number, since it is larger than the sum of its proper divisors (211642).

423278 is a wasteful number, since it uses less digits than its factorization.

423278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211641.

The product of its digits is 2688, while the sum is 26.

The square root of 423278 is about 650.5981862871. The cubic root of 423278 is about 75.0830487455.

The spelling of 423278 in words is "four hundred twenty-three thousand, two hundred seventy-eight".