423730 has 8 divisors (see below), whose sum is σ = 762732. Its totient is φ = 169488.

The previous prime is 423727. The next prime is 423749. The reversal of 423730 is 37324.

423730 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 375769 + 47961 = 613^2 + 219^2 .

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

It is a super-2 number, since 2×423730² = 359094225800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 423698 and 423707.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 21177 + ... + 21196.

2⁴²³⁷³⁰ is an apocalyptic number.

423730 is a deficient number, since it is larger than the sum of its proper divisors (339002).

423730 is a wasteful number, since it uses less digits than its factorization.

423730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42380.

The product of its (nonzero) digits is 504, while the sum is 19.

The square root of 423730 is about 650.9454662259. The cubic root of 423730 is about 75.1097652022.

The spelling of 423730 in words is "four hundred twenty-three thousand, seven hundred thirty".