1440343142 has 48 divisors (see below), whose sum is σ = 2620081152. Its totient is φ = 591449040.

The previous prime is 1440343129. The next prime is 1440343183. The reversal of 1440343142 is 2413430441.

It is a congruent number.

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 in 23 ways as a sum of consecutive naturals, for example, 310613 + ... + 315215.

It is an arithmetic number, because the mean of its divisors is an integer number (54585024).

Almost surely, 2^1440343142 is an apocalyptic number.

1440343142 is a deficient number, since it is larger than the sum of its proper divisors (1179738010).

1440343142 is a wasteful number, since it uses less digits than its factorization.

1440343142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4753 (or 4746 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 1440343142 is about 37951.8529455414. The cubic root of 1440343142 is about 1129.3329244737.

Adding to 1440343142 its reverse (2413430441), we get a palindrome (3853773583).

The spelling of 1440343142 in words is "one billion, four hundred forty million, three hundred forty-three thousand, one hundred forty-two".