1230040021440 has 56 divisors (see below), whose sum is σ = 3905377071120. Its totient is φ = 328010672128.

The previous prime is 1230040021417. The next prime is 1230040021471. The reversal of 1230040021440 is 441200400321.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 640644885 + ... + 640646804.

It is an arithmetic number, because the mean of its divisors is an integer number (69738876270).

Almost surely, 2^{1230040021440} is an apocalyptic number.

1230040021440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1230040021440 is an abundant number, since it is smaller than the sum of its proper divisors (2675337049680).

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

1230040021440 is a wasteful number, since it uses less digits than its factorization.

1230040021440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1281291709 (or 1281291699 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 1230040021440 its reverse (441200400321), we get a palindrome (1671240421761).

The spelling of 1230040021440 in words is "one trillion, two hundred thirty billion, forty million, twenty-one thousand, four hundred forty".