1003402344440 has 128 divisors (see below), whose sum is σ = 2397862958400. Its totient is φ = 376583454720.

The previous prime is 1003402344383. The next prime is 1003402344443. The reversal of 1003402344440 is 444432043001.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003402344443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 422128532 + ... + 422130908.

Almost surely, 2^{1003402344440} is an apocalyptic number.

1003402344440 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 1003402344440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1198931479200).

1003402344440 is an abundant number, since it is smaller than the sum of its proper divisors (1394460613960).

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

1003402344440 is a wasteful number, since it uses less digits than its factorization.

1003402344440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4065 (or 4061 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 1003402344440 its reverse (444432043001), we get a palindrome (1447834387441).

The spelling of 1003402344440 in words is "one trillion, three billion, four hundred two million, three hundred forty-four thousand, four hundred forty".