1304020422 has 12 divisors (see below), whose sum is σ = 2825377620. Its totient is φ = 434673468.

The previous prime is 1304020391. The next prime is 1304020423. The reversal of 1304020422 is 2240204031.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 72445579 = 1304020422 / (1 + 3 + 0 + 4 + 0 + 2 + 0 + 4 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 1304020395 and 1304020404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304020423) 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 5 ways as a sum of consecutive naturals, for example, 36222772 + ... + 36222807.

It is an arithmetic number, because the mean of its divisors is an integer number (235448135).

Almost surely, 2^1304020422 is an apocalyptic number.

1304020422 is an abundant number, since it is smaller than the sum of its proper divisors (1521357198).

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

1304020422 is a wasteful number, since it uses less digits than its factorization.

1304020422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72445587 (or 72445584 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1304020422 is about 36111.2229369209. Note that the first 3 decimals coincide. The cubic root of 1304020422 is about 1092.5168175143.

Adding to 1304020422 its reverse (2240204031), we get a palindrome (3544224453).

The spelling of 1304020422 in words is "one billion, three hundred four million, twenty thousand, four hundred twenty-two".