1123722 has 24 divisors (see below), whose sum is σ = 2456064. Its totient is φ = 371304.

The previous prime is 1123709. The next prime is 1123729. The reversal of 1123722 is 2273211.

It is a super-2 number, since 2×1123722² = 2525502266568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 1123695 and 1123704.

It is not an unprimeable number, because it can be changed into a prime (1123729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2743 + ... + 3125.

It is an arithmetic number, because the mean of its divisors is an integer number (102336).

2^1123722 is an apocalyptic number.

1123722 is an abundant number, since it is smaller than the sum of its proper divisors (1332342).

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

1123722 is a wasteful number, since it uses less digits than its factorization.

1123722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554 (or 551 counting only the distinct ones).

The product of its digits is 168, while the sum is 18.

The square root of 1123722 is about 1060.0575456078. The cubic root of 1123722 is about 103.9647933098.

Adding to 1123722 its reverse (2273211), we get a palindrome (3396933).

The spelling of 1123722 in words is "one million, one hundred twenty-three thousand, seven hundred twenty-two".