120404231440 has 20 divisors (see below), whose sum is σ = 279939838284. Its totient is φ = 48161692544.

The previous prime is 120404231413. The next prime is 120404231459. The reversal of 120404231440 is 44132404021.

It can be written as a sum of positive squares in 2 ways, for example, as 14677807104 + 105726424336 = 121152^2 + 325156^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 752526367 + ... + 752526526.

Almost surely, 2^120404231440 is an apocalyptic number.

120404231440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120404231440 is an abundant number, since it is smaller than the sum of its proper divisors (159535606844).

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

120404231440 is a wasteful number, since it uses less digits than its factorization.

120404231440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505052906 (or 1505052900 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 120404231440 its reverse (44132404021), we get a palindrome (164536635461).

The spelling of 120404231440 in words is "one hundred twenty billion, four hundred four million, two hundred thirty-one thousand, four hundred forty".