1260340 has 48 divisors (see below), whose sum is σ = 2857680. Its totient is φ = 465920.

The previous prime is 1260323. The next prime is 1260341. The reversal of 1260340 is 430621.

It can be written as a sum of positive squares in 8 ways, for example, as 63504 + 1196836 = 252^2 + 1094^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1260341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23754 + ... + 23806.

It is an arithmetic number, because the mean of its divisors is an integer number (59535).

2^1260340 is an apocalyptic number.

1260340 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 1260340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1428840).

1260340 is an abundant number, since it is smaller than the sum of its proper divisors (1597340).

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

1260340 is a wasteful number, since it uses less digits than its factorization.

1260340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1260340 is about 1122.6486538539. The cubic root of 1260340 is about 108.0179439778.

Adding to 1260340 its reverse (430621), we get a palindrome (1690961).

It can be divided in two parts, 1260 and 340, that added together give a square (1600 = 40²).

The spelling of 1260340 in words is "one million, two hundred sixty thousand, three hundred forty".