1421344320 has 112 divisors (see below), whose sum is σ = 4923056448. Its totient is φ = 344565760.

The previous prime is 1421344297. The next prime is 1421344321. The reversal of 1421344320 is 234431241.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (1421344321) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 56739 + ... + 77858.

Almost surely, 2^1421344320 is an apocalyptic number.

1421344320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1421344320 is an abundant number, since it is smaller than the sum of its proper divisors (3501712128).

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

1421344320 is a wasteful number, since it uses less digits than its factorization.

1421344320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134628 (or 134618 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1421344320 is about 37700.7204175199. The cubic root of 1421344320 is about 1124.3454483760.

Adding to 1421344320 its reverse (234431241), we get a palindrome (1655775561).

The spelling of 1421344320 in words is "one billion, four hundred twenty-one million, three hundred forty-four thousand, three hundred twenty".