1304302021 has 16 divisors (see below), whose sum is σ = 1446432768. Its totient is φ = 1166180400.

The previous prime is 1304302001. The next prime is 1304302037. The reversal of 1304302021 is 1202034031.

It is a happy number.

It is not a de Polignac number, because 1304302021 - 2¹⁹ = 1303777733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1304301986 and 1304302004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304302001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 359800 + ... + 363406.

It is an arithmetic number, because the mean of its divisors is an integer number (90402048).

Almost surely, 2^1304302021 is an apocalyptic number.

1304302021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1304302021 is a deficient number, since it is larger than the sum of its proper divisors (142130747).

1304302021 is a wasteful number, since it uses less digits than its factorization.

1304302021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4152.

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

The square root of 1304302021 is about 36115.1217774494. The cubic root of 1304302021 is about 1092.5954536807.

Adding to 1304302021 its reverse (1202034031), we get a palindrome (2506336052).

The spelling of 1304302021 in words is "one billion, three hundred four million, three hundred two thousand, twenty-one".