1123000 has 32 divisors (see below), whose sum is σ = 2630160. Its totient is φ = 448800.

The previous prime is 1122997. The next prime is 1123051. The reversal of 1123000 is 3211.

It is a super-2 number, since 2×1123000² = 2522258000000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 439 + ... + 1561.

2^1123000 is an apocalyptic number.

1123000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1123000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1315080).

1123000 is an abundant number, since it is smaller than the sum of its proper divisors (1507160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1123000 is a wasteful number, since it uses less digits than its factorization.

1123000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144 (or 1130 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 1123000 is about 1059.7169433391. The cubic root of 1123000 is about 103.9425224805.

Adding to 1123000 its reverse (3211), we get a palindrome (1126211).

The spelling of 1123000 in words is "one million, one hundred twenty-three thousand".