1440421000 has 64 divisors (see below), whose sum is σ = 3517188480. Its totient is φ = 551108800.

The previous prime is 1440420991. The next prime is 1440421043. The reversal of 1440421000 is 1240441.

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, 8314 + ... + 54313.

It is an arithmetic number, because the mean of its divisors is an integer number (54956070).

Almost surely, 2^1440421000 is an apocalyptic number.

1440421000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1440421000 is an abundant number, since it is smaller than the sum of its proper divisors (2076767480).

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

1440421000 is a wasteful number, since it uses less digits than its factorization.

1440421000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62671 (or 62657 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 1440421000 is about 37952.8786786984. The cubic root of 1440421000 is about 1129.3532728699.

Adding to 1440421000 its reverse (1240441), we get a palindrome (1441661441).

The spelling of 1440421000 in words is "one billion, four hundred forty million, four hundred twenty-one thousand".