1303040 has 40 divisors (see below), whose sum is σ = 3130380. Its totient is φ = 520192.

The previous prime is 1303037. The next prime is 1303051. The reversal of 1303040 is 403031.

It can be written as a sum of positive squares in 2 ways, for example, as 1290496 + 12544 = 1136^2 + 112^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2306 + ... + 2814.

2^1303040 is an apocalyptic number.

1303040 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 1303040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1565190).

1303040 is an abundant number, since it is smaller than the sum of its proper divisors (1827340).

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

1303040 is an frugal number, since it uses more digits than its factorization.

1303040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532 (or 516 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 1303040 is about 1141.5077748312. The cubic root of 1303040 is about 109.2242947551.

Adding to 1303040 its reverse (403031), we get a palindrome (1706071).

Subtracting from 1303040 its reverse (403031), we obtain a palindrome (900009).

The spelling of 1303040 in words is "one million, three hundred three thousand, forty".