423942 has 8 divisors (see below), whose sum is σ = 847896. Its totient is φ = 141312.

The previous prime is 423931. The next prime is 423949. The reversal of 423942 is 249324.

It is a happy number.

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

423942 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423949) by changing a digit.

423942 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35323 + ... + 35334.

It is an arithmetic number, because the mean of its divisors is an integer number (105987).

2⁴²³⁹⁴² is an apocalyptic number.

423942 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.

423942 is a wasteful number, since it uses less digits than its factorization.

423942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70662.

The product of its digits is 1728, while the sum is 24.

The square root of 423942 is about 651.1082859249. The cubic root of 423942 is about 75.1222893846.

The spelling of 423942 in words is "four hundred twenty-three thousand, nine hundred forty-two".