1123458 has 32 divisors (see below), whose sum is σ = 2681856. Its totient is φ = 306768.

The previous prime is 1123439. The next prime is 1123477. The reversal of 1123458 is 8543211.

It is an interprime number because it is at equal distance from previous prime (1123439) and next prime (1123477).

It is a plaindrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 385 + ... + 1547.

It is an arithmetic number, because the mean of its divisors is an integer number (83808).

2^1123458 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1123458, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1340928).

1123458 is an abundant number, since it is smaller than the sum of its proper divisors (1558398).

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

1123458 is a wasteful number, since it uses less digits than its factorization.

1123458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1198.

The product of its digits is 960, while the sum is 24.

The square root of 1123458 is about 1059.9330167515. The cubic root of 1123458 is about 103.9566510661.

Adding to 1123458 its reverse (8543211), we get a palindrome (9666669).

It can be divided in two parts, 112 and 3458, that added together give a triangular number (3570 = T₈₄).

The spelling of 1123458 in words is "one million, one hundred twenty-three thousand, four hundred fifty-eight".