1440421024 has 24 divisors (see below), whose sum is σ = 3240947808. Its totient is φ = 617323200.

The previous prime is 1440420991. The next prime is 1440421043. The reversal of 1440421024 is 4201240441.

It is a junction number, because it is equal to n+sod(n) for n = 1440420986 and 1440421004.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3215002 + ... + 3215449.

It is an arithmetic number, because the mean of its divisors is an integer number (135039492).

Almost surely, 2^1440421024 is an apocalyptic number.

1440421024 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1440421024 is an abundant number, since it is smaller than the sum of its proper divisors (1800526784).

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

1440421024 is an equidigital number, since it uses as much as digits as its factorization.

1440421024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6430468 (or 6430460 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 1440421024 is about 37952.8789948800. The cubic root of 1440421024 is about 1129.3532791423.

Adding to 1440421024 its reverse (4201240441), we get a palindrome (5641661465).

The spelling of 1440421024 in words is "one billion, four hundred forty million, four hundred twenty-one thousand, twenty-four".