1301420321 has 2 divisors, whose sum is σ = 1301420322. Its totient is φ = 1301420320.

The previous prime is 1301420317. The next prime is 1301420369. The reversal of 1301420321 is 1230241031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1124663296 + 176757025 = 33536^2 + 13295^2 .

It is a cyclic number.

It is not a de Polignac number, because 1301420321 - 2² = 1301420317 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1301420321.

It is not a weakly prime, because it can be changed into another prime (1301420381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650710160 + 650710161.

It is an arithmetic number, because the mean of its divisors is an integer number (650710161).

Almost surely, 2^1301420321 is an apocalyptic number.

It is an amenable number.

1301420321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301420321 is an equidigital number, since it uses as much as digits as its factorization.

1301420321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1301420321 is about 36075.2036861887. The cubic root of 1301420321 is about 1091.7902071740.

Adding to 1301420321 its reverse (1230241031), we get a palindrome (2531661352).

The spelling of 1301420321 in words is "one billion, three hundred one million, four hundred twenty thousand, three hundred twenty-one".