423786 has 16 divisors (see below), whose sum is σ = 924768. Its totient is φ = 128400.

The previous prime is 423781. The next prime is 423791. The reversal of 423786 is 687324.

It is an interprime number because it is at equal distance from previous prime (423781) and next prime (423791).

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

423786 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is an upside-down number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3145 + ... + 3276.

It is an arithmetic number, because the mean of its divisors is an integer number (57798).

2⁴²³⁷⁸⁶ is an apocalyptic number.

423786 is an abundant number, since it is smaller than the sum of its proper divisors (500982).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423786 is a wasteful number, since it uses less digits than its factorization.

423786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6437.

The product of its digits is 8064, while the sum is 30.

The square root of 423786 is about 650.9884791607. The cubic root of 423786 is about 75.1130738827.

It can be divided in two parts, 42 and 3786, that added together give a triangular number (3828 = T₈₇).

The spelling of 423786 in words is "four hundred twenty-three thousand, seven hundred eighty-six".