1133043240 has 128 divisors (see below), whose sum is σ = 3896064000. Its totient is φ = 258225408.

The previous prime is 1133043229. The next prime is 1133043269. The reversal of 1133043240 is 423403311.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 316581 + ... + 320139.

It is an arithmetic number, because the mean of its divisors is an integer number (30438000).

Almost surely, 2^1133043240 is an apocalyptic number.

1133043240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1133043240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1948032000).

1133043240 is an abundant number, since it is smaller than the sum of its proper divisors (2763020760).

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

1133043240 is a wasteful number, since it uses less digits than its factorization.

1133043240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3959 (or 3955 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1133043240 is about 33660.7076574453. The cubic root of 1133043240 is about 1042.5146372931.

Adding to 1133043240 its reverse (423403311), we get a palindrome (1556446551).

The spelling of 1133043240 in words is "one billion, one hundred thirty-three million, forty-three thousand, two hundred forty".