1121440343 has 8 divisors (see below), whose sum is σ = 1193970960. Its totient is φ = 1049639040.

The previous prime is 1121440339. The next prime is 1121440349. The reversal of 1121440343 is 3430441211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1121440343 - 2² = 1121440339 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121440349) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 179153 + ... + 185306.

It is an arithmetic number, because the mean of its divisors is an integer number (149246370).

Almost surely, 2^1121440343 is an apocalyptic number.

1121440343 is a deficient number, since it is larger than the sum of its proper divisors (72530617).

1121440343 is a wasteful number, since it uses less digits than its factorization.

1121440343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364657.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1121440343 is about 33487.9133867728. The cubic root of 1121440343 is about 1038.9438066073.

Adding to 1121440343 its reverse (3430441211), we get a palindrome (4551881554).

The spelling of 1121440343 in words is "one billion, one hundred twenty-one million, four hundred forty thousand, three hundred forty-three".