1421330400 has 216 divisors, whose sum is σ = 5728164624. Its totient is φ = 324864000.

The previous prime is 1421330399. The next prime is 1421330411. The reversal of 1421330400 is 40331241.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 36300 + ... + 64500.

Almost surely, 2^1421330400 is an apocalyptic number.

1421330400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1421330400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2864082312).

1421330400 is an abundant number, since it is smaller than the sum of its proper divisors (4306834224).

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

1421330400 is a wasteful number, since it uses less digits than its factorization.

1421330400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28234 (or 28218 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1421330400 is about 37700.5358052110. The cubic root of 1421330400 is about 1124.3417779214.

Adding to 1421330400 its reverse (40331241), we get a palindrome (1461661641).

The spelling of 1421330400 in words is "one billion, four hundred twenty-one million, three hundred thirty thousand, four hundred".