1240442312 has 8 divisors (see below), whose sum is σ = 2325829350. Its totient is φ = 620221152.

The previous prime is 1240442299. The next prime is 1240442323. The reversal of 1240442312 is 2132440421.

It can be written as a sum of positive squares in only one way, i.e., 990612676 + 249829636 = 31474^2 + 15806^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 77527637 + ... + 77527652.

Almost surely, 2^1240442312 is an apocalyptic number.

It is an amenable number.

1240442312 is a deficient number, since it is larger than the sum of its proper divisors (1085387038).

1240442312 is a wasteful number, since it uses less digits than its factorization.

1240442312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155055295 (or 155055291 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 1240442312 is about 35219.9135717281. The cubic root of 1240442312 is about 1074.4647956365.

Adding to 1240442312 its reverse (2132440421), we get a palindrome (3372882733).

The spelling of 1240442312 in words is "one billion, two hundred forty million, four hundred forty-two thousand, three hundred twelve".