1122443240 has 128 divisors (see below), whose sum is σ = 2798496000. Its totient is φ = 403273728.

The previous prime is 1122443219. The next prime is 1122443251. The reversal of 1122443240 is 423442211.

It is a super-3 number, since 3×1122443240³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

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 31 ways as a sum of consecutive naturals, for example, 2744156 + ... + 2744564.

It is an arithmetic number, because the mean of its divisors is an integer number (21863250).

Almost surely, 2^1122443240 is an apocalyptic number.

1122443240 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 1122443240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1399248000).

1122443240 is an abundant number, since it is smaller than the sum of its proper divisors (1676052760).

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

1122443240 is a wasteful number, since it uses less digits than its factorization.

1122443240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619 (or 615 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 1122443240 is about 33502.8840549586. The cubic root of 1122443240 is about 1039.2534212867.

Adding to 1122443240 its reverse (423442211), we get a palindrome (1545885451).

The spelling of 1122443240 in words is "one billion, one hundred twenty-two million, four hundred forty-three thousand, two hundred forty".