1138143 has 8 divisors (see below), whose sum is σ = 1538608. Its totient is φ = 748224.

The previous prime is 1138141. The next prime is 1138147. The reversal of 1138143 is 3418311.

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

It is not a de Polignac number, because 1138143 - 2¹ = 1138141 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138141) 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, 2380 + ... + 2817.

It is an arithmetic number, because the mean of its divisors is an integer number (192326).

2^1138143 is an apocalyptic number.

1138143 is a deficient number, since it is larger than the sum of its proper divisors (400465).

1138143 is an equidigital number, since it uses as much as digits as its factorization.

1138143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5273.

The product of its digits is 288, while the sum is 21.

The square root of 1138143 is about 1066.8378508471. The cubic root of 1138143 is about 104.4076395226.

It can be divided in two parts, 113 and 8143, that added together give a triangular number (8256 = T₁₂₈).

The spelling of 1138143 in words is "one million, one hundred thirty-eight thousand, one hundred forty-three".