1272126715 has 8 divisors (see below), whose sum is σ = 1526753088. Its totient is φ = 1017567360.

The previous prime is 1272126701. The next prime is 1272126743. The reversal of 1272126715 is 5176212721.

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

It is not a de Polignac number, because 1272126715 - 2⁷ = 1272126587 is a prime.

It is a super-3 number, since 3×1272126715³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47230 + ... + 69100.

It is an arithmetic number, because the mean of its divisors is an integer number (190844136).

Almost surely, 2^1272126715 is an apocalyptic number.

1272126715 is a deficient number, since it is larger than the sum of its proper divisors (254626373).

1272126715 is a wasteful number, since it uses less digits than its factorization.

1272126715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33509.

The product of its digits is 11760, while the sum is 34.

The square root of 1272126715 is about 35666.8854121018. The cubic root of 1272126715 is about 1083.5362807685.

The spelling of 1272126715 in words is "one billion, two hundred seventy-two million, one hundred twenty-six thousand, seven hundred fifteen".