1121446140 has 96 divisors (see below), whose sum is σ = 3342233664. Its totient is φ = 279982080.

The previous prime is 1121446093. The next prime is 1121446141. The reversal of 1121446140 is 416441211.

It is a self number, because there is not a number n which added to its sum of digits gives 1121446140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121446141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 198150 + ... + 203730.

It is an arithmetic number, because the mean of its divisors is an integer number (34814934).

Almost surely, 2^1121446140 is an apocalyptic number.

1121446140 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 1121446140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1671116832).

1121446140 is an abundant number, since it is smaller than the sum of its proper divisors (2220787524).

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

1121446140 is a wasteful number, since it uses less digits than its factorization.

1121446140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5807 (or 5805 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 1121446140 is about 33487.9999402771. Note that the first 4 decimals coincide. The cubic root of 1121446140 is about 1038.9455967893.

Adding to 1121446140 its reverse (416441211), we get a palindrome (1537887351).

The spelling of 1121446140 in words is "one billion, one hundred twenty-one million, four hundred forty-six thousand, one hundred forty".