1240042304 has 14 divisors (see below), whose sum is σ = 2460709074. Its totient is φ = 620021120.

The previous prime is 1240042303. The next prime is 1240042333. The reversal of 1240042304 is 4032400421.

It can be written as a sum of positive squares in only one way, i.e., 1166905600 + 73136704 = 34160^2 + 8552^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240042303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9687767 + ... + 9687894.

Almost surely, 2^1240042304 is an apocalyptic number.

It is an amenable number.

1240042304 is a deficient number, since it is larger than the sum of its proper divisors (1220666770).

1240042304 is an equidigital number, since it uses as much as digits as its factorization.

1240042304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19375673 (or 19375663 counting only the distinct ones).

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

The square root of 1240042304 is about 35214.2343946308. The cubic root of 1240042304 is about 1074.3492882574.

Adding to 1240042304 its reverse (4032400421), we get a palindrome (5272442725).

The spelling of 1240042304 in words is "one billion, two hundred forty million, forty-two thousand, three hundred four".