1442440312 has 16 divisors (see below), whose sum is σ = 2718591840. Its totient is φ = 717482496.

The previous prime is 1442440303. The next prime is 1442440313. The reversal of 1442440312 is 2130442441.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1442440313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 465568 + ... + 468655.

It is an arithmetic number, because the mean of its divisors is an integer number (169911990).

Almost surely, 2^1442440312 is an apocalyptic number.

It is an amenable number.

1442440312 is a deficient number, since it is larger than the sum of its proper divisors (1276151528).

1442440312 is a wasteful number, since it uses less digits than its factorization.

1442440312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934422 (or 934418 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 1442440312 is about 37979.4722448851. The cubic root of 1442440312 is about 1129.8807695225.

Adding to 1442440312 its reverse (2130442441), we get a palindrome (3572882753).

The spelling of 1442440312 in words is "one billion, four hundred forty-two million, four hundred forty thousand, three hundred twelve".