1121203240 has 32 divisors (see below), whose sum is σ = 2527238880. Its totient is φ = 447675712.

The previous prime is 1121203219. The next prime is 1121203273. The reversal of 1121203240 is 423021211.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2374 + ... + 47413.

It is an arithmetic number, because the mean of its divisors is an integer number (78976215).

Almost surely, 2^1121203240 is an apocalyptic number.

1121203240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121203240 is an abundant number, since it is smaller than the sum of its proper divisors (1406035640).

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

1121203240 is a wasteful number, since it uses less digits than its factorization.

1121203240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50361 (or 50357 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1121203240 is about 33484.3730716285. The cubic root of 1121203240 is about 1038.8705811172.

Adding to 1121203240 its reverse (423021211), we get a palindrome (1544224451).

The spelling of 1121203240 in words is "one billion, one hundred twenty-one million, two hundred three thousand, two hundred forty".