1302040247 has 2 divisors, whose sum is σ = 1302040248. Its totient is φ = 1302040246.

The previous prime is 1302040219. The next prime is 1302040273. The reversal of 1302040247 is 7420402031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1302040247 - 2¹⁶ = 1301974711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1302045247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 651020123 + 651020124.

It is an arithmetic number, because the mean of its divisors is an integer number (651020124).

Almost surely, 2^1302040247 is an apocalyptic number.

1302040247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1302040247 is an equidigital number, since it uses as much as digits as its factorization.

1302040247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 1302040247 is about 36083.7947976651. The cubic root of 1302040247 is about 1091.9635361862.

Adding to 1302040247 its reverse (7420402031), we get a palindrome (8722442278).

The spelling of 1302040247 in words is "one billion, three hundred two million, forty thousand, two hundred forty-seven".