1440145200 has 120 divisors (see below), whose sum is σ = 4968185488. Its totient is φ = 354493440.

The previous prime is 1440145193. The next prime is 1440145211. The reversal of 1440145200 is 25410441.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30559 + ... + 61758.

Almost surely, 2^1440145200 is an apocalyptic number.

1440145200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1440145200 is an abundant number, since it is smaller than the sum of its proper divisors (3528040288).

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

1440145200 is a wasteful number, since it uses less digits than its factorization.

1440145200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92351 (or 92340 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 1440145200 is about 37949.2450517794. The cubic root of 1440145200 is about 1129.2811885014.

Adding to 1440145200 its reverse (25410441), we get a palindrome (1465555641).

The spelling of 1440145200 in words is "one billion, four hundred forty million, one hundred forty-five thousand, two hundred".