1405045121440 has 24 divisors (see below), whose sum is σ = 3319419099780. Its totient is φ = 562018048512.

The previous prime is 1405045121411. The next prime is 1405045121453. The reversal of 1405045121440 is 441215405041.

It can be written as a sum of positive squares in 2 ways, for example, as 1403684691984 + 1360429456 = 1184772^2 + 36884^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4390765845 + ... + 4390766164.

Almost surely, 2^{1405045121440} is an apocalyptic number.

1405045121440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1405045121440 is an abundant number, since it is smaller than the sum of its proper divisors (1914373978340).

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

1405045121440 is an equidigital number, since it uses as much as digits as its factorization.

1405045121440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8781532024 (or 8781532016 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 31.

The spelling of 1405045121440 in words is "one trillion, four hundred five billion, forty-five million, one hundred twenty-one thousand, four hundred forty".