1304543420 has 24 divisors (see below), whose sum is σ = 2883728400. Its totient is φ = 494353152.

The previous prime is 1304543419. The next prime is 1304543423. The reversal of 1304543420 is 243454031.

It is a self number, because there is not a number n which added to its sum of digits gives 1304543420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304543423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1716125 + ... + 1716884.

It is an arithmetic number, because the mean of its divisors is an integer number (120155350).

Almost surely, 2^1304543420 is an apocalyptic number.

1304543420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1304543420 is an abundant number, since it is smaller than the sum of its proper divisors (1579184980).

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

1304543420 is a wasteful number, since it uses less digits than its factorization.

1304543420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3433037 (or 3433035 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 1304543420 is about 36118.4636993325. The cubic root of 1304543420 is about 1092.6628550381.

Adding to 1304543420 its reverse (243454031), we get a palindrome (1547997451).

It can be divided in two parts, 13045 and 43420, that added together give a palindrome (56465).

The spelling of 1304543420 in words is "one billion, three hundred four million, five hundred forty-three thousand, four hundred twenty".