1155143 has 8 divisors (see below), whose sum is σ = 1326720. Its totient is φ = 994680.

The previous prime is 1155127. The next prime is 1155149. The reversal of 1155143 is 3415511.

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

It is a cyclic number.

It is not a de Polignac number, because 1155143 - 2⁴ = 1155127 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 (1155149) 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, 2555 + ... + 2972.

It is an arithmetic number, because the mean of its divisors is an integer number (165840).

2^1155143 is an apocalyptic number.

1155143 is a deficient number, since it is larger than the sum of its proper divisors (171577).

1155143 is a wasteful number, since it uses less digits than its factorization.

1155143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5557.

The product of its digits is 300, while the sum is 20.

The square root of 1155143 is about 1074.7757905722. The cubic root of 1155143 is about 104.9249047330.

The spelling of 1155143 in words is "one million, one hundred fifty-five thousand, one hundred forty-three".