1120840345 has 8 divisors (see below), whose sum is σ = 1424126664. Its totient is φ = 843926784.

The previous prime is 1120840319. The next prime is 1120840397. The reversal of 1120840345 is 5430480211.

It can be written as a sum of positive squares in 4 ways, for example, as 9018009 + 1111822336 = 3003^2 + 33344^2 .

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

It is not a de Polignac number, because 1120840345 - 2⁹ = 1120839833 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6593094 + ... + 6593263.

It is an arithmetic number, because the mean of its divisors is an integer number (178015833).

Almost surely, 2^1120840345 is an apocalyptic number.

It is an amenable number.

1120840345 is a deficient number, since it is larger than the sum of its proper divisors (303286319).

1120840345 is a wasteful number, since it uses less digits than its factorization.

1120840345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13186379.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 1120840345 is about 33478.9537620279. The cubic root of 1120840345 is about 1038.7584867744.

The spelling of 1120840345 in words is "one billion, one hundred twenty million, eight hundred forty thousand, three hundred forty-five".