8143442 has 24 divisors (see below), whose sum is σ = 13221876. Its totient is φ = 3760128.

The previous prime is 8143427. The next prime is 8143453. The reversal of 8143442 is 2443418.

It can be written as a sum of positive squares in 6 ways, for example, as 5612161 + 2531281 = 2369^2 + 1591^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42098 + ... + 42290.

Almost surely, 2^8143442 is an apocalyptic number.

8143442 is a deficient number, since it is larger than the sum of its proper divisors (5078434).

8143442 is a wasteful number, since it uses less digits than its factorization.

8143442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302 (or 285 counting only the distinct ones).

The product of its digits is 3072, while the sum is 26.

The square root of 8143442 is about 2853.6716699719. The cubic root of 8143442 is about 201.1882760185.

The spelling of 8143442 in words is "eight million, one hundred forty-three thousand, four hundred forty-two".