1121041240 has 32 divisors (see below), whose sum is σ = 2751647760. Its totient is φ = 407651200.

The previous prime is 1121041237. The next prime is 1121041289. The reversal of 1121041240 is 421401211.

It is a happy number.

It is a congruent 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, 1273471 + ... + 1274350.

Almost surely, 2^1121041240 is an apocalyptic number.

1121041240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121041240 is an abundant number, since it is smaller than the sum of its proper divisors (1630606520).

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

1121041240 is a wasteful number, since it uses less digits than its factorization.

1121041240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2547843 (or 2547839 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1121041240 is about 33481.9539453718. The cubic root of 1121041240 is about 1038.8205440575.

Adding to 1121041240 its reverse (421401211), we get a palindrome (1542442451).

The spelling of 1121041240 in words is "one billion, one hundred twenty-one million, forty-one thousand, two hundred forty".