8427942 has 32 divisors (see below), whose sum is σ = 18933600. Its totient is φ = 2778624.

The previous prime is 8427941. The next prime is 8427953. The reversal of 8427942 is 2497248.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 8427897 and 8427906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8427941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4434 + ... + 6042.

It is an arithmetic number, because the mean of its divisors is an integer number (591675).

Almost surely, 2^8427942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8427942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9466800).

8427942 is an abundant number, since it is smaller than the sum of its proper divisors (10505658).

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

8427942 is a wasteful number, since it uses less digits than its factorization.

8427942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1717 (or 1711 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 8427942 is about 2903.0918001331. The cubic root of 8427942 is about 203.5044198925.

The spelling of 8427942 in words is "eight million, four hundred twenty-seven thousand, nine hundred forty-two".