1123442430 has 64 divisors (see below), whose sum is σ = 2949585408. Its totient is φ = 271589760.

The previous prime is 1123442413. The next prime is 1123442459. The reversal of 1123442430 is 342443211.

It is a self number, because there is not a number n which added to its sum of digits gives 1123442430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118527 + ... + 127653.

It is an arithmetic number, because the mean of its divisors is an integer number (46087272).

Almost surely, 2^1123442430 is an apocalyptic number.

1123442430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1123442430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1474792704).

1123442430 is an abundant number, since it is smaller than the sum of its proper divisors (1826142978).

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

1123442430 is a wasteful number, since it uses less digits than its factorization.

1123442430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9521.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1123442430 is about 33517.7927375894. The cubic root of 1123442430 is about 1039.5617081894.

Adding to 1123442430 its reverse (342443211), we get a palindrome (1465885641).

The spelling of 1123442430 in words is "one billion, one hundred twenty-three million, four hundred forty-two thousand, four hundred thirty".