1123265400 has 48 divisors (see below), whose sum is σ = 3482124600. Its totient is φ = 299537280.

The previous prime is 1123265357. The next prime is 1123265413. The reversal of 1123265400 is 45623211.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 935455 + ... + 936654.

Almost surely, 2^1123265400 is an apocalyptic number.

1123265400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123265400 is an abundant number, since it is smaller than the sum of its proper divisors (2358859200).

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

1123265400 is a wasteful number, since it uses less digits than its factorization.

1123265400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1872128 (or 1872119 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1123265400 is about 33515.1517973588. The cubic root of 1123265400 is about 1039.5071012445.

Adding to 1123265400 its reverse (45623211), we get a palindrome (1168888611).

The spelling of 1123265400 in words is "one billion, one hundred twenty-three million, two hundred sixty-five thousand, four hundred".