1241440 has 24 divisors (see below), whose sum is σ = 2933280. Its totient is φ = 496512.

The previous prime is 1241437. The next prime is 1241447. The reversal of 1241440 is 441421.

It is a super-3 number, since 3×1241440³ = 5739822446333952000, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1241447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3720 + ... + 4039.

It is an arithmetic number, because the mean of its divisors is an integer number (122220).

2^1241440 is an apocalyptic number.

1241440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1241440 is an abundant number, since it is smaller than the sum of its proper divisors (1691840).

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

1241440 is an equidigital number, since it uses as much as digits as its factorization.

1241440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7774 (or 7766 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 1241440 is about 1114.1992640457. The cubic root of 1241440 is about 107.4752782524.

Adding to 1241440 its reverse (441421), we get a palindrome (1682861).

It can be divided in two parts, 1241 and 440, that added together give a square (1681 = 41²).

The spelling of 1241440 in words is "one million, two hundred forty-one thousand, four hundred forty".