1122003440 has 80 divisors (see below), whose sum is σ = 2659570848. Its totient is φ = 440107008.

The previous prime is 1122003403. The next prime is 1122003497. The reversal of 1122003440 is 443002211.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-4 number, since 4×1122003440⁴ (a number of 37 digits) contains 4444 as substring.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 1891784 + ... + 1892376.

Almost surely, 2^1122003440 is an apocalyptic number.

1122003440 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 1122003440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1329785424).

1122003440 is an abundant number, since it is smaller than the sum of its proper divisors (1537567408).

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

1122003440 is a wasteful number, since it uses less digits than its factorization.

1122003440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026 (or 1020 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1122003440 is about 33496.3197978524. The cubic root of 1122003440 is about 1039.1176688057.

Adding to 1122003440 its reverse (443002211), we get a palindrome (1565005651).

The spelling of 1122003440 in words is "one billion, one hundred twenty-two million, three thousand, four hundred forty".