1272485135 has 4 divisors (see below), whose sum is σ = 1526982168. Its totient is φ = 1017988104.

The previous prime is 1272485089. The next prime is 1272485147. The reversal of 1272485135 is 5315842721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5315842721 = 7 ⋅759406103.

It is a cyclic number.

It is not a de Polignac number, because 1272485135 - 2¹⁰ = 1272484111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127248509 + ... + 127248518.

It is an arithmetic number, because the mean of its divisors is an integer number (381745542).

Almost surely, 2^1272485135 is an apocalyptic number.

1272485135 is a deficient number, since it is larger than the sum of its proper divisors (254497033).

1272485135 is an equidigital number, since it uses as much as digits as its factorization.

1272485135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254497032.

The product of its digits is 67200, while the sum is 38.

The square root of 1272485135 is about 35671.9096068601. The cubic root of 1272485135 is about 1083.6380328454.

The spelling of 1272485135 in words is "one billion, two hundred seventy-two million, four hundred eighty-five thousand, one hundred thirty-five".