1304021229 has 16 divisors (see below), whose sum is σ = 2040786048. Its totient is φ = 725015232.

The previous prime is 1304021219. The next prime is 1304021233. The reversal of 1304021229 is 9221204031.

It is not a de Polignac number, because 1304021229 - 2¹² = 1304017133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1304021199 and 1304021208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304021219) 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, 838362 + ... + 839915.

It is an arithmetic number, because the mean of its divisors is an integer number (127549128).

Almost surely, 2^1304021229 is an apocalyptic number.

It is an amenable number.

1304021229 is a deficient number, since it is larger than the sum of its proper divisors (736764819).

1304021229 is a wasteful number, since it uses less digits than its factorization.

1304021229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1678324.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 1304021229 is about 36111.2341107307. The cubic root of 1304021229 is about 1092.5170428842.

The spelling of 1304021229 in words is "one billion, three hundred four million, twenty-one thousand, two hundred twenty-nine".