1044421400 has 48 divisors (see below), whose sum is σ = 2649038040. Its totient is φ = 379788800.

The previous prime is 1044421387. The next prime is 1044421409. The reversal of 1044421400 is 41244401.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1044421409) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 235169 + ... + 239568.

Almost surely, 2^1044421400 is an apocalyptic number.

1044421400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1044421400 is an abundant number, since it is smaller than the sum of its proper divisors (1604616640).

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

1044421400 is a wasteful number, since it uses less digits than its factorization.

1044421400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474764 (or 474755 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1044421400 is about 32317.5091861981. The cubic root of 1044421400 is about 1014.5931377474.

Adding to 1044421400 its reverse (41244401), we get a palindrome (1085665801).

The spelling of 1044421400 in words is "one billion, forty-four million, four hundred twenty-one thousand, four hundred".