1040235542440 has 128 divisors (see below), whose sum is σ = 2589215569920. Its totient is φ = 374754124800.

The previous prime is 1040235542399. The next prime is 1040235542441. The reversal of 1040235542440 is 442455320401.

It is a junction number, because it is equal to n+sod(n) for n = 1040235542396 and 1040235542405.

It is not an unprimeable number, because it can be changed into a prime (1040235542441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 562350 + ... + 1548130.

It is an arithmetic number, because the mean of its divisors is an integer number (20228246640).

Almost surely, 2^{1040235542440} is an apocalyptic number.

1040235542440 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 1040235542440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1294607784960).

1040235542440 is an abundant number, since it is smaller than the sum of its proper divisors (1548980027480).

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

1040235542440 is a wasteful number, since it uses less digits than its factorization.

1040235542440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985883 (or 985879 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 34.

The spelling of 1040235542440 in words is "one trillion, forty billion, two hundred thirty-five million, five hundred forty-two thousand, four hundred forty".