1044021400 has 24 divisors (see below), whose sum is σ = 2427350220. Its totient is φ = 417608480.

The previous prime is 1044021337. The next prime is 1044021413. The reversal of 1044021400 is 41204401.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 2609854 + ... + 2610253.

Almost surely, 2^1044021400 is an apocalyptic number.

1044021400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1044021400 is an abundant number, since it is smaller than the sum of its proper divisors (1383328820).

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

1044021400 is a wasteful number, since it uses less digits than its factorization.

1044021400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5220123 (or 5220114 counting only the distinct ones).

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

The square root of 1044021400 is about 32311.3199977964. The cubic root of 1044021400 is about 1014.4635958223.

Adding to 1044021400 its reverse (41204401), we get a palindrome (1085225801).

The spelling of 1044021400 in words is "one billion, forty-four million, twenty-one thousand, four hundred".