1440020133420 has 96 divisors (see below), whose sum is σ = 4398828940800. Its totient is φ = 349078172160.

The previous prime is 1440020133379. The next prime is 1440020133443. The reversal of 1440020133420 is 243310200441.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17060481 + ... + 17144679.

It is an arithmetic number, because the mean of its divisors is an integer number (45821134800).

Almost surely, 2^{1440020133420} is an apocalyptic number.

1440020133420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1440020133420 is an abundant number, since it is smaller than the sum of its proper divisors (2958808807380).

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

1440020133420 is a wasteful number, since it uses less digits than its factorization.

1440020133420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110135 (or 110133 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 1440020133420 its reverse (243310200441), we get a palindrome (1683330333861).

The spelling of 1440020133420 in words is "one trillion, four hundred forty billion, twenty million, one hundred thirty-three thousand, four hundred twenty".