1105403121440 has 96 divisors (see below), whose sum is σ = 2726955383040. Its totient is φ = 422642525184.

The previous prime is 1105403121439. The next prime is 1105403121499. The reversal of 1105403121440 is 441213045011.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5221166 + ... + 5428754.

It is an arithmetic number, because the mean of its divisors is an integer number (28405785240).

Almost surely, 2^{1105403121440} is an apocalyptic number.

1105403121440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1105403121440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1363477691520).

1105403121440 is an abundant number, since it is smaller than the sum of its proper divisors (1621552261600).

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

1105403121440 is a wasteful number, since it uses less digits than its factorization.

1105403121440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209074 (or 209066 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 1105403121440 its reverse (441213045011), we get a palindrome (1546616166451).

The spelling of 1105403121440 in words is "one trillion, one hundred five billion, four hundred three million, one hundred twenty-one thousand, four hundred forty".