1121520344 has 32 divisors (see below), whose sum is σ = 2421619200. Its totient is φ = 476979360.

The previous prime is 1121520343. The next prime is 1121520373. The reversal of 1121520344 is 4430251211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121520343) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 69104 + ... + 83775.

It is an arithmetic number, because the mean of its divisors is an integer number (75675600).

Almost surely, 2^1121520344 is an apocalyptic number.

1121520344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1121520344 is an abundant number, since it is smaller than the sum of its proper divisors (1300098856).

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

1121520344 is a wasteful number, since it uses less digits than its factorization.

1121520344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153023 (or 153019 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1121520344 is about 33489.1078412071. The cubic root of 1121520344 is about 1038.9685113149.

Adding to 1121520344 its reverse (4430251211), we get a palindrome (5551771555).

The spelling of 1121520344 in words is "one billion, one hundred twenty-one million, five hundred twenty thousand, three hundred forty-four".