1240144443 has 12 divisors (see below), whose sum is σ = 1791912720. Its totient is φ = 826489296.

The previous prime is 1240144439. The next prime is 1240144447. The reversal of 1240144443 is 3444410421.

It is an interprime number because it is at equal distance from previous prime (1240144439) and next prime (1240144447).

It is not a de Polignac number, because 1240144443 - 2² = 1240144439 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1240144447) 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 11 ways as a sum of consecutive naturals, for example, 8098 + ... + 50456.

It is an arithmetic number, because the mean of its divisors is an integer number (149326060).

Almost surely, 2^1240144443 is an apocalyptic number.

1240144443 is a deficient number, since it is larger than the sum of its proper divisors (551768277).

1240144443 is a wasteful number, since it uses less digits than its factorization.

1240144443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45618 (or 45615 counting only the distinct ones).

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

The square root of 1240144443 is about 35215.6846163751. The cubic root of 1240144443 is about 1074.3787845493.

Adding to 1240144443 its reverse (3444410421), we get a palindrome (4684554864).

The spelling of 1240144443 in words is "one billion, two hundred forty million, one hundred forty-four thousand, four hundred forty-three".