1440344142 has 24 divisors (see below), whose sum is σ = 3304319616. Its totient is φ = 451872576.

The previous prime is 1440344137. The next prime is 1440344149. The reversal of 1440344142 is 2414430441.

It is a super-3 number, since 3×1440344142³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440344149) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 2353198 + ... + 2353809.

It is an arithmetic number, because the mean of its divisors is an integer number (137679984).

Almost surely, 2^1440344142 is an apocalyptic number.

1440344142 is an abundant number, since it is smaller than the sum of its proper divisors (1863975474).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1440344142 is a wasteful number, since it uses less digits than its factorization.

1440344142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4707032 (or 4707029 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 1440344142 is about 37951.8661201264. The cubic root of 1440344142 is about 1129.3331858311. Note that the first 3 decimals are identical.

Adding to 1440344142 its reverse (2414430441), we get a palindrome (3854774583).

The spelling of 1440344142 in words is "one billion, four hundred forty million, three hundred forty-four thousand, one hundred forty-two".