1123455234 has 96 divisors (see below), whose sum is σ = 2633093568. Its totient is φ = 318208000.

The previous prime is 1123455233. The next prime is 1123455247. The reversal of 1123455234 is 4325543211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123455233) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2801434 + ... + 2801834.

It is an arithmetic number, because the mean of its divisors is an integer number (27428058).

Almost surely, 2^1123455234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1123455234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1316546784).

1123455234 is an abundant number, since it is smaller than the sum of its proper divisors (1509638334).

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

1123455234 is a wasteful number, since it uses less digits than its factorization.

1123455234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672 (or 661 counting only the distinct ones).

The product of its digits is 14400, while the sum is 30.

The square root of 1123455234 is about 33517.9837400760. The cubic root of 1123455234 is about 1039.5656575084.

Adding to 1123455234 its reverse (4325543211), we get a palindrome (5448998445).

The spelling of 1123455234 in words is "one billion, one hundred twenty-three million, four hundred fifty-five thousand, two hundred thirty-four".