1440230140 has 48 divisors (see below), whose sum is σ = 3246318432. Its totient is φ = 534767616.

The previous prime is 1440230137. The next prime is 1440230201. The reversal of 1440230140 is 410320441.

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 15 ways as a sum of consecutive naturals, for example, 4194 + ... + 53833.

It is an arithmetic number, because the mean of its divisors is an integer number (67631634).

Almost surely, 2^1440230140 is an apocalyptic number.

1440230140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1440230140 is an abundant number, since it is smaller than the sum of its proper divisors (1806088292).

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

1440230140 is a wasteful number, since it uses less digits than its factorization.

1440230140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58126 (or 58124 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1440230140 is about 37950.3641616256. The cubic root of 1440230140 is about 1129.3033897948.

Adding to 1440230140 its reverse (410320441), we get a palindrome (1850550581).

The spelling of 1440230140 in words is "one billion, four hundred forty million, two hundred thirty thousand, one hundred forty".