1440342340 has 48 divisors (see below), whose sum is σ = 3341907072. Its totient is φ = 518667776.

The previous prime is 1440342313. The next prime is 1440342359. The reversal of 1440342340 is 432430441.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84274 + ... + 99913.

It is an arithmetic number, because the mean of its divisors is an integer number (69623064).

Almost surely, 2^1440342340 is an apocalyptic number.

1440342340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1440342340 is an abundant number, since it is smaller than the sum of its proper divisors (1901564732).

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

1440342340 is a wasteful number, since it uses less digits than its factorization.

1440342340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184236 (or 184234 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 1440342340 is about 37951.8423795209. The cubic root of 1440342340 is about 1129.3327148651.

Adding to 1440342340 its reverse (432430441), we get a palindrome (1872772781).

The spelling of 1440342340 in words is "one billion, four hundred forty million, three hundred forty-two thousand, three hundred forty".