1241043440 has 80 divisors (see below), whose sum is σ = 3551314368. Its totient is φ = 392767488.

The previous prime is 1241043437. The next prime is 1241043449. The reversal of 1241043440 is 443401421.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1241043449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77957 + ... + 92516.

Almost surely, 2^1241043440 is an apocalyptic number.

1241043440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1241043440 is an abundant number, since it is smaller than the sum of its proper divisors (2310270928).

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

1241043440 is a wasteful number, since it uses less digits than its factorization.

1241043440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170506 (or 170500 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 1241043440 is about 35228.4464602117. The cubic root of 1241043440 is about 1074.6383322750.

Adding to 1241043440 its reverse (443401421), we get a palindrome (1684444861).

The spelling of 1241043440 in words is "one billion, two hundred forty-one million, forty-three thousand, four hundred forty".