8142743 has 8 divisors (see below), whose sum is σ = 9343488. Its totient is φ = 6951384.

The previous prime is 8142733. The next prime is 8142749. The reversal of 8142743 is 3472418.

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

It is a cyclic number.

It is not a de Polignac number, because 8142743 - 2⁴ = 8142727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8142749) 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, 371 + ... + 4052.

It is an arithmetic number, because the mean of its divisors is an integer number (1167936).

Almost surely, 2^8142743 is an apocalyptic number.

8142743 is a deficient number, since it is larger than the sum of its proper divisors (1200745).

8142743 is a wasteful number, since it uses less digits than its factorization.

8142743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4693.

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

The square root of 8142743 is about 2853.5491935483. The cubic root of 8142743 is about 201.1825194588.

It can be divided in two parts, 81 and 42743, that added together give a palindrome (42824).

The spelling of 8142743 in words is "eight million, one hundred forty-two thousand, seven hundred forty-three".