6442743 has 8 divisors (see below), whose sum is σ = 8622448. Its totient is φ = 4279104.

The previous prime is 6442721. The next prime is 6442763. The reversal of 6442743 is 3472446.

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

It is not a de Polignac number, because 6442743 - 2⁶ = 6442679 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6442743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6442703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3046 + ... + 4707.

It is an arithmetic number, because the mean of its divisors is an integer number (1077806).

Almost surely, 2^6442743 is an apocalyptic number.

6442743 is a deficient number, since it is larger than the sum of its proper divisors (2179705).

6442743 is a wasteful number, since it uses less digits than its factorization.

6442743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8033.

The product of its digits is 16128, while the sum is 30.

The square root of 6442743 is about 2538.2558972649. The cubic root of 6442743 is about 186.0759604184.

The spelling of 6442743 in words is "six million, four hundred forty-two thousand, seven hundred forty-three".