1303240 has 32 divisors (see below), whose sum is σ = 3029760. Its totient is φ = 504000.

The previous prime is 1303223. The next prime is 1303241. The reversal of 1303240 is 423031.

It is a self number, because there is not a number n which added to its sum of digits gives 1303240.

It is not an unprimeable number, because it can be changed into a prime (1303241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 715 + ... + 1765.

It is an arithmetic number, because the mean of its divisors is an integer number (94680).

2^1303240 is an apocalyptic number.

1303240 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 1303240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1514880).

1303240 is an abundant number, since it is smaller than the sum of its proper divisors (1726520).

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

1303240 is a wasteful number, since it uses less digits than its factorization.

1303240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093 (or 1089 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 1303240 is about 1141.5953749030. The cubic root of 1303240 is about 109.2298826473.

Adding to 1303240 its reverse (423031), we get a palindrome (1726271).

The spelling of 1303240 in words is "one million, three hundred three thousand, two hundred forty".