1320040244 has 24 divisors (see below), whose sum is σ = 2353365000. Its totient is φ = 647700480.

The previous prime is 1320040237. The next prime is 1320040279. The reversal of 1320040244 is 4420400231.

It can be written as a sum of positive squares in 4 ways, for example, as 76772644 + 1243267600 = 8762^2 + 35260^2 .

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 103532 + ... + 115580.

It is an arithmetic number, because the mean of its divisors is an integer number (98056875).

Almost surely, 2^1320040244 is an apocalyptic number.

It is an amenable number.

1320040244 is a deficient number, since it is larger than the sum of its proper divisors (1033324756).

1320040244 is a wasteful number, since it uses less digits than its factorization.

1320040244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12563 (or 12561 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 1320040244 is about 36332.3580847707. The cubic root of 1320040244 is about 1096.9724583811.

Adding to 1320040244 its reverse (4420400231), we get a palindrome (5740440475).

The spelling of 1320040244 in words is "one billion, three hundred twenty million, forty thousand, two hundred forty-four".