1204240 has 20 divisors (see below), whose sum is σ = 2800044. Its totient is φ = 481664.

The previous prime is 1204219. The next prime is 1204243. The reversal of 1204240 is 424021.

It can be written as a sum of positive squares in 2 ways, for example, as 853776 + 350464 = 924^2 + 592^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 1204240.

It is not an unprimeable number, because it can be changed into a prime (1204243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7447 + ... + 7606.

2^1204240 is an apocalyptic number.

1204240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1204240 is an abundant number, since it is smaller than the sum of its proper divisors (1595804).

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

1204240 is a wasteful number, since it uses less digits than its factorization.

1204240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15066 (or 15060 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 1204240 is about 1097.3786948907. The cubic root of 1204240 is about 106.3908673640.

Adding to 1204240 its reverse (424021), we get a palindrome (1628261).

It can be divided in two parts, 1204 and 240, that added together give a square (1444 = 38²).

The spelling of 1204240 in words is "one million, two hundred four thousand, two hundred forty".