423785 has 8 divisors (see below), whose sum is σ = 513216. Its totient is φ = 335920.

The previous prime is 423781. The next prime is 423791. The reversal of 423785 is 587324.

It is a happy number.

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

It is not a de Polignac number, because 423785 - 2² = 423781 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 332 + ... + 978.

It is an arithmetic number, because the mean of its divisors is an integer number (64152).

2⁴²³⁷⁸⁵ is an apocalyptic number.

It is an amenable number.

423785 is a deficient number, since it is larger than the sum of its proper divisors (89431).

423785 is a wasteful number, since it uses less digits than its factorization.

423785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783.

The product of its digits is 6720, while the sum is 29.

The square root of 423785 is about 650.9877110975. The cubic root of 423785 is about 75.1130148017.

The spelling of 423785 in words is "four hundred twenty-three thousand, seven hundred eighty-five".