1272849587 has 2 divisors, whose sum is σ = 1272849588. Its totient is φ = 1272849586.

The previous prime is 1272849583. The next prime is 1272849631. The reversal of 1272849587 is 7859482721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1272849587 - 2² = 1272849583 is a prime.

It is a super-2 number, since 2×1272849587² = 3240292142252141138, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1272849581) 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, 636424793 + 636424794.

It is an arithmetic number, because the mean of its divisors is an integer number (636424794).

Almost surely, 2^1272849587 is an apocalyptic number.

1272849587 is a deficient number, since it is larger than the sum of its proper divisors (1).

1272849587 is an equidigital number, since it uses as much as digits as its factorization.

1272849587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2257920, while the sum is 53.

The square root of 1272849587 is about 35677.0176304018. The cubic root of 1272849587 is about 1083.7414777605.

The spelling of 1272849587 in words is "one billion, two hundred seventy-two million, eight hundred forty-nine thousand, five hundred eighty-seven".