1440031400120 has 32 divisors (see below), whose sum is σ = 3309008328000. Its totient is φ = 563756972928.

The previous prime is 1440031400107. The next prime is 1440031400177. The reversal of 1440031400120 is 210041300441.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1440031400092 and 1440031400101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 382985195 + ... + 382988954.

It is an arithmetic number, because the mean of its divisors is an integer number (103406510250).

Almost surely, 2^{1440031400120} is an apocalyptic number.

1440031400120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1440031400120 is an abundant number, since it is smaller than the sum of its proper divisors (1868976927880).

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

1440031400120 is a wasteful number, since it uses less digits than its factorization.

1440031400120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765974207 (or 765974203 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 1440031400120 its reverse (210041300441), we get a palindrome (1650072700561).

The spelling of 1440031400120 in words is "one trillion, four hundred forty billion, thirty-one million, four hundred thousand, one hundred twenty".