1123671 has 4 divisors (see below), whose sum is σ = 1498232. Its totient is φ = 749112.

The previous prime is 1123669. The next prime is 1123691. The reversal of 1123671 is 1763211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1763211 = 3 ⋅587737.

It is not a de Polignac number, because 1123671 - 2¹ = 1123669 is a prime.

It is a D-number.

It is a Duffinian number.

1123671 is a lucky 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 (1123601) 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, 187276 + ... + 187281.

It is an arithmetic number, because the mean of its divisors is an integer number (374558).

2^1123671 is an apocalyptic number.

1123671 is a deficient number, since it is larger than the sum of its proper divisors (374561).

1123671 is an equidigital number, since it uses as much as digits as its factorization.

1123671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374560.

The product of its digits is 252, while the sum is 21.

The square root of 1123671 is about 1060.0334900370. The cubic root of 1123671 is about 103.9632204757.

Adding to 1123671 its reverse (1763211), we get a palindrome (2886882).

The spelling of 1123671 in words is "one million, one hundred twenty-three thousand, six hundred seventy-one".