1240344003 has 16 divisors (see below), whose sum is σ = 1680734720. Its totient is φ = 813500064.

The previous prime is 1240343989. The next prime is 1240344019. The reversal of 1240344003 is 3004430421.

1240344003 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1240344003 - 2⁵ = 1240343971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1240344403) 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, 57825 + ... + 76317.

It is an arithmetic number, because the mean of its divisors is an integer number (105045920).

Almost surely, 2^1240344003 is an apocalyptic number.

1240344003 is a deficient number, since it is larger than the sum of its proper divisors (440390717).

1240344003 is a wasteful number, since it uses less digits than its factorization.

1240344003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18858.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 1240344003 is about 35218.5178989690. The cubic root of 1240344003 is about 1074.4364099687.

Adding to 1240344003 its reverse (3004430421), we get a palindrome (4244774424).

The spelling of 1240344003 in words is "one billion, two hundred forty million, three hundred forty-four thousand, three".