1240002444 has 12 divisors (see below), whose sum is σ = 2893339064. Its totient is φ = 413334144.

The previous prime is 1240002431. The next prime is 1240002521. The reversal of 1240002444 is 4442000421.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1240002444² = 3075212122251946272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1240002444.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 51666757 + ... + 51666780.

Almost surely, 2^1240002444 is an apocalyptic number.

It is an amenable number.

1240002444 is an abundant number, since it is smaller than the sum of its proper divisors (1653336620).

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

1240002444 is a wasteful number, since it uses less digits than its factorization.

1240002444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103333544 (or 103333542 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 1240002444 is about 35213.6684257690. The cubic root of 1240002444 is about 1074.3377768164.

Adding to 1240002444 its reverse (4442000421), we get a palindrome (5682002865).

The spelling of 1240002444 in words is "one billion, two hundred forty million, two thousand, four hundred forty-four".