8243442 has 24 divisors (see below), whose sum is σ = 17980716. Its totient is φ = 2729376.

The previous prime is 8243441. The next prime is 8243497. The reversal of 8243442 is 2443428.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7667361 + 576081 = 2769^2 + 759^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (8243441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1368 + ... + 4284.

Almost surely, 2^8243442 is an apocalyptic number.

8243442 is an abundant number, since it is smaller than the sum of its proper divisors (9737274).

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

8243442 is a wasteful number, since it uses less digits than its factorization.

8243442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3082 (or 3079 counting only the distinct ones).

The product of its digits is 6144, while the sum is 27.

The square root of 8243442 is about 2871.1394950437. The cubic root of 8243442 is about 202.0084465311.

The spelling of 8243442 in words is "eight million, two hundred forty-three thousand, four hundred forty-two".