1272684505 has 8 divisors (see below), whose sum is σ = 1607601600. Its totient is φ = 964560816.

The previous prime is 1272684487. The next prime is 1272684521. The reversal of 1272684505 is 5054862721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1272684505 - 2⁵ = 1272684473 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6698245 + ... + 6698434.

It is an arithmetic number, because the mean of its divisors is an integer number (200950200).

Almost surely, 2^1272684505 is an apocalyptic number.

It is an amenable number.

1272684505 is a deficient number, since it is larger than the sum of its proper divisors (334917095).

1272684505 is a wasteful number, since it uses less digits than its factorization.

1272684505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13396703.

The product of its (nonzero) digits is 134400, while the sum is 40.

The square root of 1272684505 is about 35674.7039931658. The cubic root of 1272684505 is about 1083.6946238490.

The spelling of 1272684505 in words is "one billion, two hundred seventy-two million, six hundred eighty-four thousand, five hundred five".