1159143 has 4 divisors (see below), whose sum is σ = 1545528. Its totient is φ = 772760.

The previous prime is 1159139. The next prime is 1159153. The reversal of 1159143 is 3419511.

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

It is a cyclic number.

It is not a de Polignac number, because 1159143 - 2² = 1159139 is a prime.

It is a super-2 number, since 2×1159143² = 2687224988898, which contains 22 as substring.

It is a D-number.

1159143 is a lucky number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1159153) 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, 193188 + ... + 193193.

It is an arithmetic number, because the mean of its divisors is an integer number (386382).

2^1159143 is an apocalyptic number.

1159143 is a deficient number, since it is larger than the sum of its proper divisors (386385).

1159143 is an equidigital number, since it uses as much as digits as its factorization.

1159143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386384.

The product of its digits is 540, while the sum is 24.

The square root of 1159143 is about 1076.6350356551. The cubic root of 1159143 is about 105.0458756451.

The spelling of 1159143 in words is "one million, one hundred fifty-nine thousand, one hundred forty-three".