7143161 has 4 divisors (see below), whose sum is σ = 7260324. Its totient is φ = 7026000.

The previous prime is 7143139. The next prime is 7143163. The reversal of 7143161 is 1613417.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 383161 + 6760000 = 619^2 + 2600^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7143161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7143163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58490 + ... + 58611.

It is an arithmetic number, because the mean of its divisors is an integer number (1815081).

Almost surely, 2^7143161 is an apocalyptic number.

It is an amenable number.

7143161 is a deficient number, since it is larger than the sum of its proper divisors (117163).

7143161 is a wasteful number, since it uses less digits than its factorization.

7143161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117162.

The product of its digits is 504, while the sum is 23.

The square root of 7143161 is about 2672.6692649858. The cubic root of 7143161 is about 192.5884093816.

Adding to 7143161 its reverse (1613417), we get a palindrome (8756578).

The spelling of 7143161 in words is "seven million, one hundred forty-three thousand, one hundred sixty-one".