1240007312 has 20 divisors (see below), whose sum is σ = 2405963196. Its totient is φ = 619113600.

The previous prime is 1240007287. The next prime is 1240007359. The reversal of 1240007312 is 2137000421.

It can be written as a sum of positive squares in 2 ways, for example, as 530104576 + 709902736 = 23024^2 + 26644^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44063 + ... + 66494.

Almost surely, 2^1240007312 is an apocalyptic number.

It is an amenable number.

1240007312 is a deficient number, since it is larger than the sum of its proper divisors (1165955884).

1240007312 is a wasteful number, since it uses less digits than its factorization.

1240007312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111266 (or 111260 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 1240007312 is about 35213.7375465883. The cubic root of 1240007312 is about 1074.3391826925.

Adding to 1240007312 its reverse (2137000421), we get a palindrome (3377007733).

The spelling of 1240007312 in words is "one billion, two hundred forty million, seven thousand, three hundred twelve".