423718 has 4 divisors (see below), whose sum is σ = 635580. Its totient is φ = 211858.

The previous prime is 423713. The next prime is 423727. The reversal of 423718 is 817324.

423718 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 junction number, because it is equal to n+sod(n) for n = 423692 and 423701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105928 + ... + 105931.

It is an arithmetic number, because the mean of its divisors is an integer number (158895).

2⁴²³⁷¹⁸ is an apocalyptic number.

423718 is a deficient number, since it is larger than the sum of its proper divisors (211862).

423718 is a wasteful number, since it uses less digits than its factorization.

423718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211861.

The product of its digits is 1344, while the sum is 25.

The square root of 423718 is about 650.9362487986. The cubic root of 423718 is about 75.1090561613.

The spelling of 423718 in words is "four hundred twenty-three thousand, seven hundred eighteen".