1162143 has 6 divisors (see below), whose sum is σ = 1678664. Its totient is φ = 774756.

The previous prime is 1162129. The next prime is 1162193. The reversal of 1162143 is 3412611.

It is a happy number.

1162143 is a `hidden beast` number, since 1 + 1 + 621 + 43 = 666.

It is not a de Polignac number, because 1162143 - 2⁶ = 1162079 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 (1162193) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64555 + ... + 64572.

2^1162143 is an apocalyptic number.

1162143 is a deficient number, since it is larger than the sum of its proper divisors (516521).

1162143 is a wasteful number, since it uses less digits than its factorization.

1162143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129133 (or 129130 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 1162143 is about 1078.0273651443. The cubic root of 1162143 is about 105.1364213172.

Adding to 1162143 its reverse (3412611), we get a palindrome (4574754).

It can be divided in two parts, 11621 and 43, that added together give a square (11664 = 108²).

The spelling of 1162143 in words is "one million, one hundred sixty-two thousand, one hundred forty-three".