4239942 has 32 divisors (see below), whose sum is σ = 9768192. Its totient is φ = 1201824.

The previous prime is 4239931. The next prime is 4239971. The reversal of 4239942 is 2499324.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6273 + ... + 6915.

It is an arithmetic number, because the mean of its divisors is an integer number (305256).

Almost surely, 2^4239942 is an apocalyptic number.

4239942 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

4239942 is an abundant number, since it is smaller than the sum of its proper divisors (5528250).

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

4239942 is a wasteful number, since it uses less digits than its factorization.

4239942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812.

The product of its digits is 15552, while the sum is 33.

The square root of 4239942 is about 2059.1119445042. Note that the first 3 decimals coincide. The cubic root of 4239942 is about 161.8527086770.

The spelling of 4239942 in words is "four million, two hundred thirty-nine thousand, nine hundred forty-two".