1301405243 has 2 divisors, whose sum is σ = 1301405244. Its totient is φ = 1301405242.

The previous prime is 1301405227. The next prime is 1301405249. The reversal of 1301405243 is 3425041031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1301405243 - 2⁴ = 1301405227 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1301405249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650702621 + 650702622.

It is an arithmetic number, because the mean of its divisors is an integer number (650702622).

Almost surely, 2^1301405243 is an apocalyptic number.

1301405243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301405243 is an equidigital number, since it uses as much as digits as its factorization.

1301405243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1301405243 is about 36074.9947054743. The cubic root of 1301405243 is about 1091.7859907355.

Adding to 1301405243 its reverse (3425041031), we get a palindrome (4726446274).

The spelling of 1301405243 in words is "one billion, three hundred one million, four hundred five thousand, two hundred forty-three".