7142857143 has 8 divisors (see below), whose sum is σ = 9529987968. Its totient is φ = 4758815544.

The previous prime is 7142857121. The next prime is 7142857147. The reversal of 7142857143 is 3417582417.

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

It is not a de Polignac number, because 7142857143 - 2⁸ = 7142856887 is a prime.

It is a super-2 number, since 2×7142857143² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 7142857095 and 7142857104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7142857147) 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, 766905 + ... + 776162.

It is an arithmetic number, because the mean of its divisors is an integer number (1191248496).

Almost surely, 2^7142857143 is an apocalyptic number.

7142857143 is a deficient number, since it is larger than the sum of its proper divisors (2387130825).

7142857143 is a wasteful number, since it uses less digits than its factorization.

7142857143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1544613.

The product of its digits is 188160, while the sum is 42.

The square root of 7142857143 is about 84515.4254736968. The cubic root of 7142857143 is about 1925.8567855670.

It can be divided in two parts, 7 and 142857143, that multiplied together give a palindrome (1000000001).

The spelling of 7142857143 in words is "seven billion, one hundred forty-two million, eight hundred fifty-seven thousand, one hundred forty-three".