1272385307 has 2 divisors, whose sum is σ = 1272385308. Its totient is φ = 1272385306.

The previous prime is 1272385291. The next prime is 1272385313. The reversal of 1272385307 is 7035832721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1272385307 - 2⁴ = 1272385291 is a prime.

It is not a weakly prime, because it can be changed into another prime (1272385337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 636192653 + 636192654.

It is an arithmetic number, because the mean of its divisors is an integer number (636192654).

Almost surely, 2^1272385307 is an apocalyptic number.

1272385307 is a deficient number, since it is larger than the sum of its proper divisors (1).

1272385307 is an equidigital number, since it uses as much as digits as its factorization.

1272385307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 1272385307 is about 35670.5103271596. The cubic root of 1272385307 is about 1083.6096945323.

The spelling of 1272385307 in words is "one billion, two hundred seventy-two million, three hundred eighty-five thousand, three hundred seven".