1304020243 has 8 divisors (see below), whose sum is σ = 1331984016. Its totient is φ = 1276329600.

The previous prime is 1304020219. The next prime is 1304020247. The reversal of 1304020243 is 3420204031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1304020243 - 2¹³ = 1304012051 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1304020243.

It is not an unprimeable number, because it can be changed into a prime (1304020247) 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, 58618 + ... + 77743.

It is an arithmetic number, because the mean of its divisors is an integer number (166498002).

Almost surely, 2^1304020243 is an apocalyptic number.

1304020243 is a deficient number, since it is larger than the sum of its proper divisors (27963773).

1304020243 is a wasteful number, since it uses less digits than its factorization.

1304020243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136565.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 1304020243 is about 36111.2204584669. The cubic root of 1304020243 is about 1092.5167675252.

Adding to 1304020243 its reverse (3420204031), we get a palindrome (4724224274).

The spelling of 1304020243 in words is "one billion, three hundred four million, twenty thousand, two hundred forty-three".