1123140 has 24 divisors (see below), whose sum is σ = 3144960. Its totient is φ = 299488.

The previous prime is 1123127. The next prime is 1123151. The reversal of 1123140 is 413211.

It is a happy number.

It is a super-2 number, since 2×1123140² = 2522886919200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a plaindrome in base 16.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9300 + ... + 9419.

It is an arithmetic number, because the mean of its divisors is an integer number (131040).

2^1123140 is an apocalyptic number.

1123140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123140 is an abundant number, since it is smaller than the sum of its proper divisors (2021820).

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

1123140 is a wasteful number, since it uses less digits than its factorization.

1123140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18731 (or 18729 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1123140 is about 1059.7829966554. The cubic root of 1123140 is about 103.9468416697.

Adding to 1123140 its reverse (413211), we get a palindrome (1536351).

The spelling of 1123140 in words is "one million, one hundred twenty-three thousand, one hundred forty".