1405140125440 has 72 divisors (see below), whose sum is σ = 3371485325040. Its totient is φ = 561098244096.

The previous prime is 1405140125429. The next prime is 1405140125633. The reversal of 1405140125440 is 445210415041.

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, 183705 + ... + 1686424.

It is an arithmetic number, because the mean of its divisors is an integer number (46826185070).

Almost surely, 2^{1405140125440} is an apocalyptic number.

1405140125440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1405140125440 is an abundant number, since it is smaller than the sum of its proper divisors (1966345199600).

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

1405140125440 is an equidigital number, since it uses as much as digits as its factorization.

1405140125440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1870737 (or 1870723 counting only the distinct ones).

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

The spelling of 1405140125440 in words is "one trillion, four hundred five billion, one hundred forty million, one hundred twenty-five thousand, four hundred forty".