1240443441 has 6 divisors (see below), whose sum is σ = 1791751650. Its totient is φ = 826962288.

The previous prime is 1240443433. The next prime is 1240443473. The reversal of 1240443441 is 1443440421.

It can be written as a sum of positive squares in only one way, i.e., 856440225 + 384003216 = 29265^2 + 19596^2 .

It is not a de Polignac number, because 1240443441 - 2³ = 1240443433 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1240443541) 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 5 ways as a sum of consecutive naturals, for example, 68913516 + ... + 68913533.

It is an arithmetic number, because the mean of its divisors is an integer number (298625275).

Almost surely, 2^1240443441 is an apocalyptic number.

It is an amenable number.

1240443441 is a deficient number, since it is larger than the sum of its proper divisors (551308209).

1240443441 is a wasteful number, since it uses less digits than its factorization.

1240443441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137827055 (or 137827052 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 1240443441 is about 35219.9295995889. The cubic root of 1240443441 is about 1074.4651216144.

Adding to 1240443441 its reverse (1443440421), we get a palindrome (2683883862).

The spelling of 1240443441 in words is "one billion, two hundred forty million, four hundred forty-three thousand, four hundred forty-one".