1384143 has 4 divisors (see below), whose sum is σ = 1845528. Its totient is φ = 922760.

The previous prime is 1384139. The next prime is 1384171. The reversal of 1384143 is 3414831.

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 1384143 - 2² = 1384139 is a prime.

It is a D-number.

1384143 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1384193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230688 + ... + 230693.

It is an arithmetic number, because the mean of its divisors is an integer number (461382).

2^1384143 is an apocalyptic number.

1384143 is a deficient number, since it is larger than the sum of its proper divisors (461385).

1384143 is an equidigital number, since it uses as much as digits as its factorization.

1384143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461384.

The product of its digits is 1152, while the sum is 24.

The square root of 1384143 is about 1176.4960688417. The cubic root of 1384143 is about 111.4449311473. Note that the first 3 decimals are identical.

Adding to 1384143 its reverse (3414831), we get a palindrome (4798974).

The spelling of 1384143 in words is "one million, three hundred eighty-four thousand, one hundred forty-three".