1123387 has 4 divisors (see below), whose sum is σ = 1126816. Its totient is φ = 1119960.

The previous prime is 1123379. The next prime is 1123391. The reversal of 1123387 is 7833211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7833211 = 2063 ⋅3797.

It is a cyclic number.

It is not a de Polignac number, because 1123387 - 2³ = 1123379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123307) 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, 1164 + ... + 1897.

It is an arithmetic number, because the mean of its divisors is an integer number (281704).

2^1123387 is an apocalyptic number.

1123387 is a deficient number, since it is larger than the sum of its proper divisors (3429).

1123387 is an equidigital number, since it uses as much as digits as its factorization.

1123387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3428.

The product of its digits is 1008, while the sum is 25.

The square root of 1123387 is about 1059.8995235398. The cubic root of 1123387 is about 103.9544610784.

Adding to 1123387 its reverse (7833211), we get a palindrome (8956598).

The spelling of 1123387 in words is "one million, one hundred twenty-three thousand, three hundred eighty-seven".