1304421120 has 216 divisors, whose sum is σ = 4543812000. Its totient is φ = 345489408.

The previous prime is 1304421077. The next prime is 1304421137. The reversal of 1304421120 is 211244031.

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

It is a junction number, because it is equal to n+sod(n) for n = 1304421093 and 1304421102.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2292196 + ... + 2292764.

Almost surely, 2^1304421120 is an apocalyptic number.

1304421120 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 1304421120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2271906000).

1304421120 is an abundant number, since it is smaller than the sum of its proper divisors (3239390880).

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

1304421120 is a wasteful number, since it uses less digits than its factorization.

1304421120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795 (or 778 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1304421120 is about 36116.7706197550. The cubic root of 1304421120 is about 1092.6287085208.

Adding to 1304421120 its reverse (211244031), we get a palindrome (1515665151).

The spelling of 1304421120 in words is "one billion, three hundred four million, four hundred twenty-one thousand, one hundred twenty".