1267252907 has 2 divisors, whose sum is σ = 1267252908. Its totient is φ = 1267252906.

The previous prime is 1267252891. The next prime is 1267252993. The reversal of 1267252907 is 7092527621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1267252907 - 2⁴ = 1267252891 is a prime.

It is not a weakly prime, because it can be changed into another prime (1267254907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 633626453 + 633626454.

It is an arithmetic number, because the mean of its divisors is an integer number (633626454).

Almost surely, 2^1267252907 is an apocalyptic number.

1267252907 is a deficient number, since it is larger than the sum of its proper divisors (1).

1267252907 is an equidigital number, since it uses as much as digits as its factorization.

1267252907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 1267252907 is about 35598.4958530554. The cubic root of 1267252907 is about 1082.1507515087.

The spelling of 1267252907 in words is "one billion, two hundred sixty-seven million, two hundred fifty-two thousand, nine hundred seven".