1123321040 has 40 divisors (see below), whose sum is σ = 2749184160. Its totient is φ = 425678976.

The previous prime is 1123320967. The next prime is 1123321049. The reversal of 1123321040 is 401233211.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123321049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 367994 + ... + 371033.

It is an arithmetic number, because the mean of its divisors is an integer number (68729604).

Almost surely, 2^1123321040 is an apocalyptic number.

1123321040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123321040 is an abundant number, since it is smaller than the sum of its proper divisors (1625863120).

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

1123321040 is a wasteful number, since it uses less digits than its factorization.

1123321040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739059 (or 739053 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1123321040 is about 33515.9818594055. The cubic root of 1123321040 is about 1039.5242646624.

Adding to 1123321040 its reverse (401233211), we get a palindrome (1524554251).

The spelling of 1123321040 in words is "one billion, one hundred twenty-three million, three hundred twenty-one thousand, forty".