1246240 has 24 divisors (see below), whose sum is σ = 2944620. Its totient is φ = 498432.

The previous prime is 1246213. The next prime is 1246241. The reversal of 1246240 is 426421.

It can be written as a sum of positive squares in 2 ways, for example, as 1245456 + 784 = 1116^2 + 28^2 .

It is a super-2 number, since 2×1246240² = 3106228275200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1246241) 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, 3735 + ... + 4054.

2^1246240 is an apocalyptic number.

1246240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1246240 is an abundant number, since it is smaller than the sum of its proper divisors (1698380).

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

1246240 is an equidigital number, since it uses as much as digits as its factorization.

1246240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7804 (or 7796 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1246240 is about 1116.3511992200. The cubic root of 1246240 is about 107.6136170308.

The spelling of 1246240 in words is "one million, two hundred forty-six thousand, two hundred forty".