1040544340 has 72 divisors (see below), whose sum is σ = 2466978696. Its totient is φ = 368121600.

The previous prime is 1040544293. The next prime is 1040544343. The reversal of 1040544340 is 434450401.

It can be written as a sum of positive squares in 4 ways, for example, as 87834384 + 952709956 = 9372^2 + 30866^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040544343) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83730 + ... + 95350.

It is an arithmetic number, because the mean of its divisors is an integer number (34263593).

Almost surely, 2^1040544340 is an apocalyptic number.

1040544340 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 1040544340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1233489348).

1040544340 is an abundant number, since it is smaller than the sum of its proper divisors (1426434356).

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

1040544340 is a wasteful number, since it uses less digits than its factorization.

1040544340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11689 (or 11676 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 1040544340 is about 32257.4695225772. The cubic root of 1040544340 is about 1013.3361368324.

Adding to 1040544340 its reverse (434450401), we get a palindrome (1474994741).

It can be divided in two parts, 10405 and 44340, that added together give a palindrome (54745).

The spelling of 1040544340 in words is "one billion, forty million, five hundred forty-four thousand, three hundred forty".