1121241040 has 20 divisors (see below), whose sum is σ = 2606885604. Its totient is φ = 448496384.

The previous prime is 1121241029. The next prime is 1121241049. The reversal of 1121241040 is 401421211.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 316270656 + 804970384 = 17784^2 + 28372^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121241049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7007677 + ... + 7007836.

Almost surely, 2^1121241040 is an apocalyptic number.

1121241040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121241040 is an abundant number, since it is smaller than the sum of its proper divisors (1485644564).

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

1121241040 is a wasteful number, since it uses less digits than its factorization.

1121241040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14015526 (or 14015520 counting only the distinct ones).

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

The square root of 1121241040 is about 33484.9375092742. The cubic root of 1121241040 is about 1038.8822557376.

Adding to 1121241040 its reverse (401421211), we get a palindrome (1522662251).

The spelling of 1121241040 in words is "one billion, one hundred twenty-one million, two hundred forty-one thousand, forty".