1304140 has 24 divisors (see below), whose sum is σ = 2760912. Its totient is φ = 517440.

The previous prime is 1304137. The next prime is 1304167. The reversal of 1304140 is 414031.

It is a super-2 number, since 2×1304140² = 3401562279200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1304140.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3775 + ... + 4105.

It is an arithmetic number, because the mean of its divisors is an integer number (115038).

2^1304140 is an apocalyptic number.

1304140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1304140 is an abundant number, since it is smaller than the sum of its proper divisors (1456772).

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

1304140 is a wasteful number, since it uses less digits than its factorization.

1304140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537 (or 535 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1304140 is about 1141.9894920707. The cubic root of 1304140 is about 109.2550210903.

Adding to 1304140 its reverse (414031), we get a palindrome (1718171).

It can be divided in two parts, 1304 and 140, that added together give a square (1444 = 38²).

The spelling of 1304140 in words is "one million, three hundred four thousand, one hundred forty".