1241445520 has 80 divisors (see below), whose sum is σ = 3303502848. Its totient is φ = 425018880.

The previous prime is 1241445487. The next prime is 1241445523. The reversal of 1241445520 is 255441421.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (1241445523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 553842 + ... + 556078.

Almost surely, 2^1241445520 is an apocalyptic number.

1241445520 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 1241445520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1651751424).

1241445520 is an abundant number, since it is smaller than the sum of its proper divisors (2062057328).

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

1241445520 is a wasteful number, since it uses less digits than its factorization.

1241445520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3248 (or 3242 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 1241445520 is about 35234.1527498534. The cubic root of 1241445520 is about 1074.7543754667.

Adding to 1241445520 its reverse (255441421), we get a palindrome (1496886941).

The spelling of 1241445520 in words is "one billion, two hundred forty-one million, four hundred forty-five thousand, five hundred twenty".