423642 has 8 divisors (see below), whose sum is σ = 847296. Its totient is φ = 141212.

The previous prime is 423617. The next prime is 423649. The reversal of 423642 is 246324.

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

423642 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (423649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35298 + ... + 35309.

It is an arithmetic number, because the mean of its divisors is an integer number (105912).

2⁴²³⁶⁴² is an apocalyptic number.

423642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

423642 is a wasteful number, since it uses less digits than its factorization.

423642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70612.

The product of its digits is 1152, while the sum is 21.

The square root of 423642 is about 650.8778687281. The cubic root of 423642 is about 75.1045652581.

Adding to 423642 its reverse (246324), we get a palindrome (669966).

It can be divided in two parts, 4236 and 42, that added together give a triangular number (4278 = T₉₂).

The spelling of 423642 in words is "four hundred twenty-three thousand, six hundred forty-two".