1421300320 has 144 divisors (see below), whose sum is σ = 3867747408. Its totient is φ = 489415680.

The previous prime is 1421300299. The next prime is 1421300323. The reversal of 1421300320 is 230031241.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 1421300294 and 1421300303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421300323) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 634242 + ... + 636478.

It is an arithmetic number, because the mean of its divisors is an integer number (26859357).

Almost surely, 2^1421300320 is an apocalyptic number.

1421300320 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 1421300320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1933873704).

1421300320 is an abundant number, since it is smaller than the sum of its proper divisors (2446447088).

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

1421300320 is a wasteful number, since it uses less digits than its factorization.

1421300320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2301 (or 2274 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1421300320 is about 37700.1368697781. The cubic root of 1421300320 is about 1124.3338462823. Note that the first 3 decimals are identical.

Adding to 1421300320 its reverse (230031241), we get a palindrome (1651331561).

The spelling of 1421300320 in words is "one billion, four hundred twenty-one million, three hundred thousand, three hundred twenty".