7143842 has 8 divisors (see below), whose sum is σ = 11346156. Its totient is φ = 3361792.

The previous prime is 7143841. The next prime is 7143883. The reversal of 7143842 is 2483417.

It can be written as a sum of positive squares in 2 ways, for example, as 6405961 + 737881 = 2531^2 + 859^2 .

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

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (7143841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105023 + ... + 105090.

Almost surely, 2^7143842 is an apocalyptic number.

7143842 is a deficient number, since it is larger than the sum of its proper divisors (4202314).

7143842 is a wasteful number, since it uses less digits than its factorization.

7143842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210132.

The product of its digits is 5376, while the sum is 29.

The square root of 7143842 is about 2672.7966626738. The cubic root of 7143842 is about 192.5945293864.

The spelling of 7143842 in words is "seven million, one hundred forty-three thousand, eight hundred forty-two".