1270642427 has 2 divisors, whose sum is σ = 1270642428. Its totient is φ = 1270642426.

The previous prime is 1270642421. The next prime is 1270642459. The reversal of 1270642427 is 7242460721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1270642427 - 2¹⁰ = 1270641403 is a prime.

It is a super-2 number, since 2×1270642427² = 3229064354584900658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1270642421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 635321213 + 635321214.

It is an arithmetic number, because the mean of its divisors is an integer number (635321214).

Almost surely, 2^1270642427 is an apocalyptic number.

1270642427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1270642427 is an equidigital number, since it uses as much as digits as its factorization.

1270642427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37632, while the sum is 35.

The square root of 1270642427 is about 35646.0716910012. The cubic root of 1270642427 is about 1083.1147017473.

The spelling of 1270642427 in words is "one billion, two hundred seventy million, six hundred forty-two thousand, four hundred twenty-seven".