7142143 has 4 divisors (see below), whose sum is σ = 7209000. Its totient is φ = 7075288.

The previous prime is 7142141. The next prime is 7142173. The reversal of 7142143 is 3412417.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3412417 = 709 ⋅4813.

It is a cyclic number.

It is not a de Polignac number, because 7142143 - 2¹ = 7142141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7142141) 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, 33268 + ... + 33481.

It is an arithmetic number, because the mean of its divisors is an integer number (1802250).

Almost surely, 2^7142143 is an apocalyptic number.

7142143 is the 1429-th centered heptagonal number.

7142143 is a deficient number, since it is larger than the sum of its proper divisors (66857).

7142143 is a wasteful number, since it uses less digits than its factorization.

7142143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66856.

The product of its digits is 672, while the sum is 22.

The square root of 7142143 is about 2672.4788118898. The cubic root of 7142143 is about 192.5792601028.

The spelling of 7142143 in words is "seven million, one hundred forty-two thousand, one hundred forty-three".