1440423112 has 16 divisors (see below), whose sum is σ = 2704792860. Its totient is φ = 719145024.

The previous prime is 1440423077. The next prime is 1440423113. The reversal of 1440423112 is 2113240441.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1244255076 + 196168036 = 35274^2 + 14006^2 .

It is not an unprimeable number, because it can be changed into a prime (1440423113) 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, 127563 + ... + 138394.

Almost surely, 2^1440423112 is an apocalyptic number.

It is an amenable number.

1440423112 is a deficient number, since it is larger than the sum of its proper divisors (1264369748).

1440423112 is a wasteful number, since it uses less digits than its factorization.

1440423112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266640 (or 266636 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1440423112 is about 37952.9065026646. The cubic root of 1440423112 is about 1129.3538248365.

Adding to 1440423112 its reverse (2113240441), we get a palindrome (3553663553).

The spelling of 1440423112 in words is "one billion, four hundred forty million, four hundred twenty-three thousand, one hundred twelve".