1383123 has 18 divisors (see below), whose sum is σ = 2167596. Its totient is φ = 782208.

The previous prime is 1383121. The next prime is 1383139. The reversal of 1383123 is 3213831.

It is a happy number.

It is not a de Polignac number, because 1383123 - 2¹ = 1383121 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1383123.

It is not an unprimeable number, because it can be changed into a prime (1383121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 14211 + ... + 14307.

It is an arithmetic number, because the mean of its divisors is an integer number (120422).

2^1383123 is an apocalyptic number.

1383123 is a deficient number, since it is larger than the sum of its proper divisors (784473).

1383123 is an frugal number, since it uses more digits than its factorization.

1383123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211 (or 107 counting only the distinct ones).

The product of its digits is 432, while the sum is 21.

The square root of 1383123 is about 1176.0624983393. The cubic root of 1383123 is about 111.4175491586.

Multiplying 1383123 by its product of digits (432), we get a square (597509136 = 24444²).

Adding to 1383123 its reverse (3213831), we get a palindrome (4596954).

The spelling of 1383123 in words is "one million, three hundred eighty-three thousand, one hundred twenty-three".