11421440420 has 48 divisors (see below), whose sum is σ = 26215589568. Its totient is φ = 4154198400.

The previous prime is 11421440411. The next prime is 11421440431. The reversal of 11421440420 is 2404412411.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 310406 + ... + 345245.

It is an arithmetic number, because the mean of its divisors is an integer number (546158116).

Almost surely, 2^11421440420 is an apocalyptic number.

11421440420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11421440420 is an abundant number, since it is smaller than the sum of its proper divisors (14794149148).

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

11421440420 is a wasteful number, since it uses less digits than its factorization.

11421440420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655740 (or 655738 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 11421440420 its reverse (2404412411), we get a palindrome (13825852831).

The spelling of 11421440420 in words is "eleven billion, four hundred twenty-one million, four hundred forty thousand, four hundred twenty".