1340041040 has 80 divisors (see below), whose sum is σ = 3412281600. Its totient is φ = 486375936.

The previous prime is 1340040983. The next prime is 1340041057. The reversal of 1340041040 is 401400431.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50441 + ... + 72279.

It is an arithmetic number, because the mean of its divisors is an integer number (42653520).

Almost surely, 2^1340041040 is an apocalyptic number.

1340041040 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 1340041040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1706140800).

1340041040 is an abundant number, since it is smaller than the sum of its proper divisors (2072240560).

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

1340041040 is a wasteful number, since it uses less digits than its factorization.

1340041040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21924 (or 21918 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1340041040 is about 36606.5709948364. The cubic root of 1340041040 is about 1102.4850264402.

Adding to 1340041040 its reverse (401400431), we get a palindrome (1741441471).

The spelling of 1340041040 in words is "one billion, three hundred forty million, forty-one thousand, forty".